View source for HMAS Sydney (D48)

{{Short description|Modified Leander-class cruiser of the Australian Navy}}
{{other ships|HMAS Sydney|HMS Phaeton}}
{{Use Australian English|date=August 2019}}
{{Use dmy dates|date=October 2020}}
{{Infobox ship
|section1={{Infobox ship/image
 |image=HMAS Sydney in 1936 (9916488333607636).jpg
 |image_caption=HMAS ''Sydney'' in 1936
 }}

|section2={{Infobox ship/career
 |country=Australia
 |flag={{shipboxflag|Australia|naval-1913}}
 |name=''Sydney''
 |namesake=[[:Sydney, Australia]]
 |builder=[[Swan Hunter & Wigham Richardson]], Wallsend-on-Tyne, England
 |laid_down=8 July 1933
 |christened=HMS ''Phaeton''
 |launched=22 September 1934
 |commissioned=24 September 1935
 |motto="I Take But I Surrender"
 |nickname=*"Stormy Petrel"{{sfn|Winter|1984|p=18}}
           * "Grey Gladiator"{{sfn|Mearns|2009|p=188}}
 |honours=*Battle honours:
          * [[Battle of Calabria|Calabria]] 1940
          * [[Battle of Cape Spada|Spada]] 1940
          * [[Battle of the Mediterranean|Mediterranean]] 1940
          * [[Sinking of HMAS Sydney|''Kormoran'']] 1941
          * plus [[HMAS Sydney#Battle honours|three inherited honours]]
 |identification=[[Pennant number]]: I48/D48
 |fate=Sunk in battle with all hands lost, 19 November 1941
 |notes={{ubli
|Wreck rediscovered in 2008
|[[Thomas Welsby Clark]] identified in 2021 as person found in 1942 at [[Christmas Island]]
}}
 |badge=
 }}

|section3={{Infobox ship/characteristics
 |header_caption= (as built)
 |class=[[Leander-class cruiser (1931)|Modified ''Leander''-class light cruiser]]
 |displacement=*6,701&nbsp;tons (light)
               * 7,198&nbsp;tons (standard)
               * 8,940&nbsp;tons (full load)
 |length=*{{convert|562|ft|4|in|m|abbr=on}} (overall)
         * {{convert|530|ft|m|abbr=on}} (between perpendiculars)
 |beam={{convert|56|ft|8.5|in|m|abbr=on}}
 |draught=*{{convert|15|ft|3|in|m|abbr=on}} forward
          * {{convert|17|ft|3|in|m|abbr=on}} aft
 |power={{convert|72000|shp|kW}}
 |propulsion=4 [[Admiralty 3-drum boiler]]s, Parsons geared turbines, 4 shafts
 |speed={{convert|32.5|kn}}
 |range={{convert|7000|nmi}} at {{convert|16|kn}}
 |complement=*33 officers, 557 sailors, 4 RAAF {{nowrap|(at commissioning)}}
             * 41 officers, 594 sailors, 6 RAAF, {{nowrap|4 civilian canteen staff}} (at loss)
 |sensors=Type 125
 |EW=
 |armament=*8 × [[BL 6 inch Mk XXIII naval gun|6-inch (150 mm) breech-loading Mk XXIII guns]] (4 × Mk XXI twin turrets)
           * 4 × [[QF 4 inch Mk V naval gun|4-inch (100 mm) quick firing Mk V guns]] (4 × Mk IV single high-angle mountings)
           * 12 × [[Vickers .50 machine gun|0.5-inch (13 mm) Vickers Mk III machine guns]] (3 × Mk II quadruple mountings)
           * 14 × [[Lewis gun|0.303-inch (7.7 mm) Lewis machine guns]] (reduced to 9 before 1939)
           * 2 × [[Vickers machine gun|0.303-inch (7.7 mm) Vickers machine guns]] (removed before 1939)
           * 8 × [[British 21-inch torpedo|21 inch (533 mm)]] deck-mounted [[torpedo tube]]s (2 × QR Mk VII quadruple mountings, 8 × Mk 9 torpedoes)
           * 4 × [[QF 3-pounder Hotchkiss|3-pounder (47-mm, 1.9-in) Hotchkiss]] quick-firing saluting guns (removed in 1940)
 |armour=*{{convert|1|in|mm|adj=on}} hull plating
         * {{convert|3|in|mm|adj=on}} belt over machinery spaces
         * {{convert|2|in|mm|adj=on}} belt over magazines and shell rooms
 |aircraft=1 × [[Supermarine Walrus]]
 |aircraft_facilities=1 × revolving [[Aircraft catapult#Interwar and World War II|catapult]] amidships
 |notes=
 }}
}}
'''HMAS ''Sydney''''', named for the Australian city of [[Sydney]], was one of three modified [[Leander-class cruiser (1931)|''Leander''-class light cruisers]] operated by the [[Royal Australian Navy]] (RAN). Ordered for the [[Royal Navy]] as '''HMS ''Phaeton''''', the cruiser was purchased by the Australian government and renamed prior to her 1934 launch.

During the early part of her operational history, ''Sydney'' helped enforce sanctions during the [[Abyssinian Crisis]], and at the start of [[World War II]] was assigned to convoy escort and patrol duties in Australian waters. In May 1940, ''Sydney'' joined the [[Mediterranean Fleet (United Kingdom)|British Mediterranean Fleet]] for an eight-month deployment, during which she sank two Italian warships, participated in multiple shore bombardments, and provided support to the [[Malta Convoys]], while receiving minimal damage and no casualties. On her return to Australia in February 1941, ''Sydney'' resumed convoy escort and patrol duties in home waters.

On 19 November 1941, ''Sydney'' was involved in a [[Sinking of HMAS Sydney|mutually destructive engagement]] with the {{Ship|German auxiliary cruiser|Kormoran||6}}, and was lost with all hands (645 aboard). The wrecks of both ships were lost until 2008; ''Sydney'' was found on 17 March, four days after her adversary. ''Sydney''{{'}}s defeat is commonly attributed to the proximity of the two ships during the engagement, and ''Kormoran''{{'}}s advantages of surprise and rapid, accurate fire. However, the cruiser's loss with all hands compared to the survival of most of the Germans has resulted in conspiracy theories alleging that the German commander used illegal ruses to lure ''Sydney'' into range, that a Japanese submarine was involved, and that the true events of the battle are concealed behind a wide-ranging [[cover-up]], despite the lack of evidence for these allegations.

==Construction and acquisition==
The ship was laid down by [[Swan Hunter & Wigham Richardson]] at [[Wallsend-on-Tyne]], England, on 8 July 1933 for the Royal Navy as HMS ''Phaeton'', named after the [[Phaethon|Greek mythological figure]].{{sfn|Cassells|2000|pp=148–49}} However, in 1934, the Australian government was seeking a replacement for the light cruiser {{HMAS|Brisbane|1915|6}}, and negotiated to purchase ''Phaeton'' while she was still under construction.<ref>Hore, in Stevens, ''The Royal Australian Navy in World War II'', p. 65</ref>

The cruiser was renamed after the [[Sydney|capital city of New South Wales]], and was launched on 22 September 1934 by Ethel Bruce, the wife of [[Stanley Bruce]], former [[Prime Minister of Australia|prime minister of Australia]] and the serving [[Australian High Commissioner to the United Kingdom]].{{sfn|Cassells|2000|p=149}} ''Sydney'' was commissioned into the RAN on 24 September 1935, drawing her ship's company from ''Brisbane'', which had been decommissioned earlier that day.{{sfn|Cassells|2000|pp=36, 149}}

Following the announcement that Australia was purchasing a British-built cruiser, there was criticism, primarily from the [[Opposition (Australia)|Opposition]] of the day, stating that such a warship should be built using Australian resources and labour.{{sfn|Frame|1993|p=16}} Several reasons were given in reply for acquiring British-built cruisers instead of Australian-made: the ship was already close to completion, the pending threat of war meant that there was not enough time to train Australians in the necessary shipbuilding skills, and that of the two cruisers built in Australian shipyards, one ({{HMAS|Adelaide|1918|6}}) had taken seven years to complete.{{sfn|Frame|1993|p=16}}

==Design==
{{Main|Leander-class cruiser (1931)#Modified Leander group|l1=Modified Leander class}}
''Sydney'' was one of three Modified [[Leander-class cruiser (1931)|''Leander''-class]] light cruisers acquired by the RAN during the late 1930s.<ref name=Goldrickopp96>Goldrick, in Stevens, ''The Royal Australian Navy'', opp. p. 96</ref> Although the first ship of the class to join the RAN, ''Sydney'' was the second ship to be laid down, although the first to be completed, in what was sometimes referred to as the ''Perth'' class: {{HMAS|Perth|D29|2}} and {{HMAS|Hobart|1934|2}} operated with the Royal Navy for a short period before they were purchased by Australia in 1938.{{sfn|Frame|1993|pp=17–18}} Like most British cruisers, the ''Leander''s were designed for long-range patrols, scouting, and [[Convoy#Naval convoys|trade protection]] duties.{{sfn|Olson|2000|p=27}}

''Sydney''{{'}}s [[displacement (ship)|displacement]] ranged between 6,701&nbsp;tons (light) and 8,940&nbsp;tons (full load), with a standard displacement of 7,198&nbsp;tons: improved fabrication and welding techniques made her 52&nbsp;tons lighter than her sister ships.{{sfn |Cole |2009 |p=18 |loc=volume 1}} She had a length of {{convert|530|ft|m}} [[between perpendiculars]] and {{convert|562|ft|4|in|m}} [[length overall|overall]],{{efn|Several sources give the cruiser's overall length as {{convert|555|ft|m}}: this value is for the unmodified ''Leander''-class cruisers.}} a [[beam (ship)|beam]] of {{convert|56|ft|8.5|in|m}}, and a [[draught (ship)|draught]] at standard displacement between {{convert|15|ft|3|in|m}} forward and {{convert|17|ft|3|in|m}} aft.{{sfn |Cole |2009 |p=18 |loc=volume 1}}

The ship was propelled by four [[Admiralty 3-drum boiler]]s, feeding Parsons single-reduction geared turbines, which supplied {{convert|72000|shp|lk=in}} to the four propeller shafts.{{sfn|Cassells|2000|p=149}}<ref>{{cite web |title=HMAS Sydney (II) |publisher=Royal Australian Navy |url=http://www.navy.gov.au/hmas-sydney-ii |access-date=23 December 2012 |archive-date=7 February 2013 |archive-url=https://web.archive.org/web/20130207072140/http://www.navy.gov.au/hmas-sydney-ii |url-status=live }}</ref> Unlike the first five ''Leander''s, which had their machinery arranged on the "in-line" principle (consisting of six boilers in three compartments forward, and four turbines in two further compartments aft), ''Sydney'' was designed with two redundant machinery groups, a design practice adopted from the United States Navy.<ref name=Goldrickopp96/>{{sfn |Cole |2009 |pp=15–16 |loc=volume 1}} The cruiser had two boilers and the turbines for the outer shafts forward, and two boilers and the turbines for the inner shafts aft; as steam from any boiler could be routed to any turbine, the ship could continue operating if one space was damaged.<ref name=Goldrickopp96/>{{sfn|Olson|2000|pp=9–10}}

Each space had its own uptake, giving the modified ships a different profile to the single-funnelled early ''Leander''s; an arrangement which contributed to naval historian Henry Lenton's description of the Modified ''Leander''s as "the most handsome cruisers ever built by the Royal Navy, with a symmetry that was as attractive as it was functional."{{sfn|Frame|1993|pp=15–16}}

''Sydney'' and her sister ships were constructed from {{convert|1|in|mm|adj=on}} hull plating, with a {{convert|3|in|mm|adj=on}} [[armour belt]] over the machinery spaces (the lengthening of this belt from {{convert|84|to|141|ft|m}} to adequately cover both spaces negated the weight reduction from their reorganisation), and {{convert|2|in|mm|adj=on}} plates over the shell rooms and [[Magazine (artillery)|magazines]].{{sfn|Frame|1993|pp=15–16}}{{sfn |Cole |2009 |p=17 |loc=volume 1}} ''Sydney'' was the first Australian warship fitted with [[asdic]]; a Type 125 unit in a retractable pattern 3069 dome.<ref name=Goldrickopp96/>{{sfn|Olson|2000|p=9}} The retractable sonar dome, located near the bow, was a weak point in the hull.{{sfn|Mearns|2009|p=205}}

One of the cruiser's early commanding officers, Royal Navy Captain J.W.A. Waller, believed that the ship's single director control tower was a weak point in the design.{{sfn|Olson|2000|p=28}} The director control tower was the highest compartment on the ship, from where personnel would determine the range and optimum firing angle for a gun salvo, then transmit this information to the gun turrets: the actual firing could be controlled from the tower or the turret.{{sfn|Frame|1993|p=18}}{{sfn|Olson|2000|pp=4–7}} Waller believed that the centralised system could be destroyed with a single hit, or the wiring linking the compartment to the turrets could be severed, forcing the four turrets to rely on independent control.{{sfn|Olson|2000|pp=4–7, 28}} Although Waller suggested that a second tower be installed aft to provide redundancy, it was deferred indefinitely as subsequent commanding officers did not share his concerns, and combat experiences of other ''Leander''-class cruisers showed that the system was more robust than expected.{{sfn|Olson|2000|pp=28–29}}{{sfn|Frame|1993|pp=19, 26}}

===Armament===
''Sydney''{{'}}s main armament consisted of eight [[BL 6 inch Mk XXIII naval gun|6-inch (152 mm) breech-loading Mk XXIII guns]] mounted in four Mk XXI twin turrets: "A" and "B" forward, "X" and "Y" aft.{{sfn|Olson|2000|pp=3–4}} All eight guns could be fired in salvo, elevated to an angle of 60° and depressed to −5°, and fire eight rounds a minute at targets up to {{convert|24800|yd|m}} away.{{sfn|Olson|2000|pp=4–5}}<ref>Cole, ''The Loss of HMAS Sydney II'', vol. 1, p. 19</ref>

[[File:HMASSydneyCrewWithMkXXIIIGuns21July1940.jpg|thumb|left|alt=A twin barrelled warship turret. Four young sailors are working on the barrels: two are sitting astride the barrels, while the other two work from the deck.|Sailors working on the {{convert|6|in|mm|adj=on}} diameter barrels of "A" turret, following the [[Battle of Cape Spada]] in 1940]]
Four [[QF 4 inch Mk V naval gun|4-inch (100 mm) quick-firing Mk V guns]], mounted on single, high-angle, Mk IV mountings, were fitted to a platform around the aft funnel.{{sfn|Olson|2000|p=7}} These were primarily used to target aircraft at heights up to {{convert|28750|ft|m}}, but could also be used against surface targets, with a maximum range of {{convert|16300|yd|m}}.{{sfn|Olson|2000|p=7}} Their replacement with eight Mk XIX high-angle/low-angle guns in four twin mounts, which was to occur in the late 1930s, was prevented by the outbreak of World War II.{{sfn|Olson|2000|pp=28–29}} The guns could have been swapped out during a maintenance docking, but the demand for cruisers and ''Sydney''{{'}}s fortune in never sustaining major damage meant that the additional time in dock could not be justified.{{sfn|Olson|2000|pp=29–30}} For close-range anti-aircraft defence, the 4-inch guns were supplemented by twelve {{convert|0.5|in|mm|adj=on}} Vickers Mk III machine guns, which were arranged in three Mk II quadruple mountings, one on each side of the forward superstructure, and the third on top of the aft superstructure.{{sfn|Cassells|2000|p=149}}{{sfn|Olson|2000|p=8}}

A mixture of [[.303 British|0.303-inch (7.7 mm) machine guns]] were used for close defence work, and could be fitted to pedestals at various points on the ship, primarily around the bridge and on the three searchlight platforms (one either side of the forward funnel, the third raised above the aft superstructure).{{sfn|Olson|2000|p=8}} At launch, ''Sydney'' carried fourteen [[Lewis gun|Lewis machine guns]] and two [[Vickers machine gun]]s, but by the start of World War II, the Lewis guns had been reduced to nine, and the Vickers guns removed completely.{{sfn|Cassells|2000|p=149}}{{sfn|Olson|2000|p=8}}

Eight [[British 21-inch torpedo|21-inch (533 mm)]] torpedo tubes were fitted in two QR Mk VII quadruple mounts to the deck below the platform for the 4-inch guns.{{sfn|Olson|2000|p=8}}<ref name=ColeV1.18>Cole, ''The Loss of HMAS Sydney II'', vol. 1, p. 18</ref> Only eight Mark 9 torpedoes were carried.<ref name=ColeV1.18/> ''Sydney'' was fitted with a single [[depth charge]] rail at the stern, which held five Mk VII depth charges.{{sfn|Olson|2000|p=9}} Four [[QF 3-pounder Hotchkiss|3-pounder (47-mm, 1.9-in) quick-firing Hotchkiss guns]] were carried as [[saluting gun]]s.{{sfn|Olson|2000|p=8}} These were removed during the August 1940 refit.{{sfn|Olson|2000|p=30}}

''Sydney'' was fitted with a {{convert|53|ft|m|adj=on}}, [[cordite]]-powered revolving [[Aircraft catapult#Interwar and World War II|catapult]] between the two funnels, which was used to launch a [[Supermarine Walrus]] (sometimes described as a Seagull V) amphibious aircraft.<ref>ANAM, ''Flying Stations'', pp. 20–21</ref>{{sfn|Olson|2000|pp=22–23}} The Walrus was operated by [[Royal Australian Air Force]] personnel from [[No. 5 Squadron RAAF]] (which was redesignated [[No. 9 Squadron RAAF]] in 1939).<ref>ANAM, ''Flying Stations'', p. 20</ref> The 7-ton electric crane used to recover the aircraft also served to deploy most of the ship's boats.{{sfn|Olson|2000|p=23}}

==Operational history==

===Early history===
''Sydney'' completed working up trials before sailing from Portsmouth on 29 October 1935, Captain J.U.P. Fitzgerald RN in command.{{sfn|Mearns|2009|pp=5–7}} Almost immediately after departing, ''Sydney'' was instructed to join the Royal Navy's Mediterranean Fleet at Gibraltar and assist the [[2nd Cruiser Squadron]] in enforcing [[economic sanctions]] against Italy in response to the [[Abyssinian crisis]].{{sfn|Mearns|2009|p=7}} During January 1936, the cruiser underwent maintenance in [[Alexandria]] and visited medical facilities in Cyprus: cases of [[rubella]] and [[mumps]] had been circulating through the ship's company since late 1935.{{sfn|Mearns|2009|p=7}}{{sfn|Frame|1993|p=17}} In March, ''Sydney'' was reassigned the [[1st Cruiser Squadron]], where she and the heavy cruiser {{HMAS|Australia|D84|6}} continued to enforce sanctions and participate in fleet exercises with Royal Navy units.{{sfn|Mearns|2009|p=7}} Following the resolution of the Abyssinian crisis, ''Sydney'' departed for Australia on 14 July; reaching Fremantle in late July before visiting Melbourne on 8 August and arriving in her namesake city three days later.{{sfn|Mearns|2009|p=7}}

[[File:HMAS Sydney SLV H98.105 2529.jpg|thumb|left|''Sydney'', circa 1935]]
After reaching Australian waters, ''Sydney'' spent most of her time on fleet exercises and training cruises.{{sfn|Mearns|2009|p=8}} In 1938, the cruiser was one of several RAN units prepared to respond to the [[Munich crisis]], but all ships stood down after the potential war was averted.{{sfn|Mearns|2009|p=8}} From 17 to 19 April 1939, ''Sydney'' was one of eight warships involved in a joint forces trade protection exercise off the south-east Australian coast.{{sfn|Gill|1957|p=58}} In early August 1939, ''Sydney'' was in Darwin, prior to visiting the Netherlands East Indies.{{sfn|Gill|1957|p=59}} However, in response to the events which [[World War II#Pre-war events|prompted the start]] of World War II, ''Sydney'' was ordered to sail to Fremantle on a war footing, where she arrived on 22 August.<ref name=Goldrickopp96/>

===Start of World War II===
Following the declaration of war, ''Sydney'' was instructed to carry out patrol and escort duties in Australian waters.{{sfn|Cassells|2000|p=149}} Captain [[John Augustine Collins|John Collins]] took over command of ''Sydney'' on 16 November.{{sfn|Mearns|2009|p=8}} On 28 November, ''Sydney'' joined the Australian heavy cruisers {{HMAS|Australia|D84|2}} and {{HMAS|Canberra|D33|2}} in an unsuccessful four-day search for the [[German pocket battleship Admiral Graf Spee|German pocket battleship ''Admiral Graf Spee'']], which was known to be operating in the Indian Ocean.{{sfn|Frame|1993|p=20}} ''Sydney'' was relieved by {{HMAS|Adelaide|1918|6}} on 13 December, and sailed to [[Cockatoo Island Dockyard]] in Sydney for a maintenance docking.{{sfn|Frame|1993|p=20}} The work was completed in late January 1940, and as a shakedown cruise ''Sydney'' joined ''Canberra'' and the British ships [[HMNZS Leander|''Leander'']] and {{HMS|Ramillies|07|2}} in escorting the Suez-bound [[Anzac convoy US 1]]; ''Sydney'' broke off after the convoy left the east coast of Australia and returned to Sydney.{{sfn|Frame|1993|p=20}}{{sfn|Gill|1957|p=92}} Returning to Fremantle on 6 February, ''Sydney'' relieved ''Australia'' as the cruiser responsible for patrol and escort duties on the west coast.{{sfn|Gill|1957|p=103}}

On 19 April, ''Sydney'' joined the escort of [[Anzac convoy US 2]] off Albany, and remained with the convoy until it reached the Cocos Islands on 28 April and was replaced by {{ship|French cruiser|Suffren}}.{{sfn|Gill|1957|p=110}} The Australian cruiser set course for [[Fremantle]], but on 1 May was assigned to the [[East Indies Station]] and rerouted to [[Colombo]], where she arrived on 8 May.{{sfn|Gill|1957|p=113}} Arriving in Colombo on 8 May, ''Sydney'' was immediately tasked with meeting [[Anzac convoy US 3]] off the Cocos Islands and escorting it across the Indian Ocean.{{sfn|Frame|1993|p=20}}{{sfn|Gill|1957|p=134}} The cruiser departed on 12 May, but while en route, she was instructed to make for the Mediterranean.{{sfn|Gill|1957|p=134}}

Arriving back in Colombo on 18 May, ''Sydney'' replenished before sailing at high speed to [[Aden]], where she arrived four days later.{{sfn|Gill|1957|p=134}} The Australian cruiser, accompanied by HM Ships {{HMS|Gloucester|C62|2}} and {{HMS|Eagle|1918|2}}, departed the next day, with the ships crossing the [[Suez Canal]] during the night of 25–26 May, and arriving in [[Alexandria]] that afternoon at 15:30.{{sfn|Gill|1957|p=135}} ''Sydney'' was originally marked for operations in the [[Red Sea]], but after observing the performance of an [[Scrap Iron Flotilla|Australian five-destroyer flotilla]] assigned to the [[Mediterranean Fleet (United Kingdom)|British Mediterranean Fleet]], Admiral [[Andrew Cunningham, 1st Viscount Cunningham of Hyndhope|Andrew Cunningham]] decided to "keep the Australian cruiser for himself" and attached ''Sydney'' to the Royal Navy's [[7th Cruiser Squadron]].<ref>Grove, in Stevens, ''The Royal Australian Navy in World War II'', p. 39</ref>

===Mediterranean operations===
''Sydney'' was in Alexandria harbour on 10 June 1940, and that evening learned of Italy's intention to declare war at midnight.{{sfn|Gill|1957|p=156}} By 01:00 on 11 June, all ships in harbour had departed to search for Italian warships in position to attack Alexandria, and secure the [[sea lines of communication]] in the eastern Mediterranean and Aegean.{{sfn|Gill|1957|p=156}} The Australian cruiser was involved in the westbound sweep, and sailed as far as the [[Gulf of Taranto]] during the four-day operation.{{sfn|Gill|1957|pp=156–57}} Apart from an unsuccessful [[depth charge]] attack on a suspected submarine during the afternoon of 13 June, ''Sydney'' did not encounter any enemy vessels.{{sfn|Gill|1957|p=157}}

[[File:HMAS Sydney 4 inch guns SLV H98.105 3249.jpg|thumb|4-inch guns on HMAS ''Sydney'']]
On 21 June, ''Sydney'' [[wikt:fire in anger|fired in anger]] for the first time, joining the British cruisers {{HMS|Orion|85|2}} and {{HMS|Neptune|20|2}}, the [[French battleship Lorraine|French battleship ''Lorraine'']], and a force of destroyers in shelling the Italian-controlled Libyan port of [[Bardia]].{{sfn|Frame|1993|p=21}} ''Sydney'' focused her fire on a military camp throughout the twenty-two-minute bombardment.{{sfn|Gill|1957|p=160}} During this operation, the Australian ship's Walrus amphibian performed bombardment spotting for the squadron, but was fired on by three biplanes: although reported at the time as Italian [[Fiat CR.42 Falco]]s, the attackers were later determined to be British [[Gloster Gladiator]]s.{{sfn|Gill|1957|p=160}}<ref name=ANAM27>ANAM, ''Flying Stations'', p. 27</ref> The pilot flew the damaged aircraft to [[Mersa Matruh]], and was awarded the [[Distinguished Flying Cross (United Kingdom)|Distinguished Flying Cross]] for his skill in doing so, but the unrepairable Walrus was the only casualty of the operation.{{sfn|Gill|1957|p=160}}<ref name=ANAM27/> The next day, a retaliatory airstrike against the ships, by then having returned to Alexandria, failed to do damage.{{sfn|Gill|1957|p=162}}

That same day, Germany and Vichy France signed the [[Second Armistice at Compiègne]]: although French warships (which had until that point operated with the Allies) were ordered to return to France and disarm, the British government was unwilling to allow them to fall into Axis hands.{{sfn|Mearns|2009|p=10}} ''Sydney'' and the British warships in Alexandria turned their guns on the French, but unlike the situation in [[Mers-el-Kébir]], which deteriorated into a [[Attack on Mers-el-Kébir|naval battle]], British Admiral Cunningham and French Admiral [[René-Emile Godfroy]] peacefully negotiated to disarm the ships at Alexandria.{{sfn|Mearns|2009|p=10}}

''Sydney'' and other elements of the 7th Squadron sailed from Alexandria on 27 June, escorting a [[Malta convoy]].{{sfn|Frame|1993|p=21}} Late on 28 June, the ships [[Battle of the Espero Convoy|engaged a force of three Italian destroyers]] carrying out a ressuply mission to [[Tobruk]].{{sfn|Cassells|2000|p=149}} Although two Italian vessels were able to continue their way, the third, [[Italian destroyer Espero (1927)|''Espero'']] was disabled.{{sfn|Cassells|2000|p=149}} At 20:00, ''Sydney'' (which had little opportunity to fire during the engagement) was detailed to recover any survivors and sink the destroyer while the rest of the force continued on to Malta.{{sfn|Gill|1957|p=165}} However, while {{convert|6000|yd|m}} from ''Espero'', the Italian ship fired two shells, both of which fell in line with but short of the cruiser.{{sfn|Gill|1957|p=165}} ''Sydney'' opened fire, and after four salvos struck the destroyer with no shots fired in return, resumed the approach.{{sfn|Gill|1957|p=165}} ''Espero'' sank at 20:35, and ''Sydney'' remained in the area for almost two hours to collect survivors despite the risk of submarine attack, before she was ordered to withdraw to Alexandria.{{sfn|Gill|1957|p=165}} The cruiser rescued 47 Italians (three of whom died from wounds during the return voyage), and left a fully provisioned cutter in the water to be used by other Italian survivors after ''Sydney'' had departed.{{sfn|Frame|1993|p=21}}{{sfn|Gill|1957|p=165}}

On the evening of 7 July, ''Sydney'' departed from Alexandria as part of a fleet including four other light cruisers, three battleships, an aircraft carrier, and sixteen destroyers, divided into three groups.{{sfn|Gill|1957|pp=172–73}} The three groups were to rendezvous on 9 July at a point {{convert|120|nmi}} east of Cape Passero and {{convert|150|nmi}} from Malta, at which point the destroyers would escort two convoys outbound from Malta, while the other vessels would attack targets of opportunity around Sicily. However, early on 8 June, the British submarine {{HMS|Phoenix|N96|6}} reported that she had unsuccessfully attacked an Italian fleet including two battleships.{{sfn|Gill|1957|p=173}} Throughout the day, the fleet had to defend itself from multiple Italian air raids: at one point ''Sydney'' and the other cruisers of the 7th Squadron attacked what they thought was a high-flying bomber, but was later determined to be the [[Venus|planet Venus]].{{sfn|Gill|1957|p=173}} Aerial reconnaissance located the Italian force during the afternoon, which was made up of at least two battleships, accompanied by multiple cruisers and destroyers.{{sfn|Gill|1957|p=174}} The sightings of such a large force of warships, combined with the heavy air attack, led Admiral [[Andrew Cunningham, 1st Viscount Cunningham of Hyndhope|Andrew Cunningham]] to conclude that the Italians were also covering a major convoy, and decide to reposition his fleet between the Italians and Taranto, the projected destination.{{sfn|Gill|1957|p=174}}

Contact with the Italian fleet was lost during the night, but regained in the morning of 9 July.{{sfn|Gill|1957|p=174}} By 14:00, the Allied fleet had positioned itself in the Italians' path, and Cunningham ordered them west, to close on the projected position of the enemy and engage.{{sfn|Gill|1957|p=175}} ''Sydney'' spotted smoke at 14:45, and made visual contact with a force of five cruisers just after 15:00.{{sfn|Gill|1957|p=176}} The Allied cruiser squadron, supported by the battleship {{HMS|Warspite|03|6}} altered their course northward, and at 15:20, ''Sydney'' opened fire on an Italian [[Zara-class cruiser (Italy)|''Zara''-class]] cruiser, {{convert|23000|yd|m}} distant, but both the Allied and Italian cruiser forces were unable to successfully hit their opposing numbers.{{sfn|Gill|1957|p=176}} ''Sydney'' remained unsuccessful until the late part of the engagement, when she successfully shelled a smokescreen-laying destroyer.{{sfn|Gill|1957|p=177}} The naval component of what came to be known as the [[Battle of Calabria]] concluded around 17:00, with Cunningham unwilling to pursue the Italian fleet through the smokescreen they had created.{{sfn|Gill|1957|p=177}} The Allied ships instead broke off for Malta, while enduring several heavy but ineffective air attacks; during the safe delivery of [[Malta Convoy MA 5]] and the return to Alexandria on 13 July, ''Sydney'' sustained no damage, but expended all her anti-aircraft ammunition.{{sfn|Gill|1957|p=177}}<ref>Grove, in Stevens, ''The Royal Australian Navy in World War II'', p. 40</ref> ''Sydney''{{'}}s participation in the battle earned the ship a [[battle honour]]: "Calabria 1940".{{sfn|Cassells|2000|p=151}}

[[File:Sydney battle damage.jpg|thumb|right|alt=Close up of a ship's funnel, which has a large hole in the side. Sailors are smiling and waving at the photographer from the top of the funnel and inside the hole.|Sailors from ''Sydney'' posing around and in the forward funnel shellhole. This was the only damage received by the Australian cruiser during the battle of Cape Spada.]]
The Australian cruiser spent five days in Alexandria for resupply and maintenance, before departing for Crete with the British destroyer {{HMS|Havock|H43|6}}.{{sfn|Gill|1957|p=184}} They arrived at sunset on 18 July, and the next morning, the two ships were ordered to patrol the Gulf of Athens for Axis warships and shipping, while providing support for a four-ship destroyer force (HM Ships {{HMS|Hyperion|H97|2}}, {{HMS|Ilex|D61|2}}, {{HMS|Hero|H99|2}}, and {{HMS|Hasty|H24|2}}) conducting an anti-submarine sweep north of Crete.{{sfn|Gill|1957|p=184}} Believing that these two tasks were incompatible, and that protecting the destroyers was the more important, ''Sydney''{{'}}s commander, Captain [[John Augustine Collins|John Collins]], ordered the two ships to move {{convert|100|nmi}} south of their patrol area while maintaining radio silence.<ref name=Goldrick112>Goldrick, in Stevens, ''The Royal Australian Navy'', p. 112</ref> At 07:20 on 19 July, the destroyer force spotted and was spotted by a pair of Italian light cruisers; ''[[Italian cruiser Giovanni dalle Bande Nere|Giovanni dalle Bande Nere]]'' and ''[[Italian cruiser Bartolomeo Colleoni|Bartolomeo Colleoni]]'', which opened fire seven minutes later.{{sfn|Gill|1957|pp=185–86}} The British destroyers turned to a north-east heading and set off at {{convert|30|kn}}, broadcasting news of the attack to the silent ''Sydney'' while closing the gap between the two forces. Using the wireless signals to track the four destroyers, ''Sydney'' and ''Havock'' made to intercept the destroyers and their cruiser pursuit, and was able to close at least half an hour earlier than if they had followed their original instructions: when ''Sydney'' opened fire on ''Bande Nere'' at 08:29, both sides were surprised by the appearance of the cruiser.{{sfn|Gill|1957|pp=186–88}}{{sfn|Mearns|2009|p=14}} Within minutes, ''Sydney'' had successfully damaged ''Bande Nere'', and when the Italians withdrew to the south, the six Allied ships pursued.{{sfn|Cassells|2000|pp=149–50}} At 08:48, with ''Bande Nere'' hiding behind a smoke screen, ''Sydney'' shifted her fire to ''Bartolomeo Colleoni'', which was disabled by 09:33.{{sfn|Cassells|2000|p=150}} Collins ordered the destroyers to torpedo the ship and rescue survivors: ''Hyperion'', ''Ilex'', and ''Havock'' did so, while ''Hero'' and ''Hasty'' supported ''Sydney'' in continuing pursuit of ''Bande Nere''.{{sfn|Gill|1957|p=192}} At 10:37, the chase ended, as the faster Italian cruiser had outrun the Allies, visibility was reduced by smoke and haze, and ammunition aboard the pursuing ships was low: ''Sydney'' had ten shells left for her forward turrets.{{sfn|Gill|1957|p=193}} The six ships returned to Alexandria around 11:00 on 20 July after fending off several air attacks (one of which damaged ''Havock''), and were met by cheering from all ships in the harbour.{{sfn|Gill|1957|pp=194–95}}

The only damage to ''Sydney'' during what came to be known as the [[Battle of Cape Spada]] was caused by a shell at 09:21, which knocked a hole in the forward funnel, and wounded a sailor through splinter damage.{{sfn|Gill|1957|p=191}} For his actions, Collins was appointed a Companion of the [[Order of the Bath]], while other officers and sailors from ''Sydney'' received two [[Distinguished Service Order]]s, two [[Distinguished Service Cross (United Kingdom)|Distinguished Service Crosses]], five [[Distinguished Service Medal (United Kingdom)|Distinguished Service Medals]], and twelve [[Mentioned in Despatches|Mentions in Despatches]] between them.{{sfn|Frame|1993|pp=23–24}}{{sfn|Winter|1984|p=17}} ''Sydney'' herself was awarded the battle honour "Spada 1940".{{sfn|Cassells|2000|p=151}}

After refuelling and rearming, ''Sydney'' and {{HMS|Neptune|20|6}} departed Alexandria on 27 July to join the covering force for a southbound convoy from the Aegean.{{sfn|Gill|1957|p=198}} The ships were attacked five times that afternoon by aircraft, but ''Sydney'' escaped with only minor damage and shrapnel wounds.{{sfn|Gill|1957|p=199}} The two cruisers broke away from the convoy the next day to locate and sink the Greek tanker ''Ermioni'', which was supplying the Italian-held [[Dodecanese]] Islands.{{sfn|Gill|1957|p=199}} The two cruisers located ''Ermioni'' just before dusk: ''Sydney'' provided anti-submarine protection while the tanker's crew were convinced to transfer to the British warships, after which ''Ermioni'' was shelled by ''Neptune''.{{sfn|Gill|1957|p=199}}{{sfn|Frame|1993|p=24}} The two ships returned to Alexandria on 30 July, and ''Sydney'' departed the same day in company with {{HMS|Orion|85|6}} for a three-day patrol.{{sfn|Frame|1993|p=24}}

[[File:Sydney II camouflage.jpg|thumb|left|alt=Black-and-white aerial photograph of a two-funnelled cruiser underway. Alternating light and dark bands are painted on the side of the ship.|''Sydney'' underway in August 1941. The ship's first camouflage pattern can be seen on the starboard flank. Shortly after this photograph was taken, the camouflage pattern was changed.]]
Back in Alexandria, ''Sydney'' underwent a refit, during which a {{convert|3|ft|m|adj=on}} high, {{convert|0.5|in|mm|adj=on}} thick wall of armour plating was constructed around the 4-inch gun platform, while the ship's company repainted the ship from standard grey to a [[Ship camouflage|naval camouflage]] pattern.{{sfn|Olson|2000|p=30}}{{sfn|Frame|1993|p=24}} The refit was completed by 12 August, when ''Sydney'', ''Neptune'', and five destroyers set off to interdict Axis shipping along the north African coast and the Aegean Sea.{{sfn|Frame|1993|p=24}} The operation was cancelled after no ships were located during the first two days, and ''Sydney'' was tasked with assisting a destroyer squadron during shore bombardments at Bomba and Bardia.{{sfn|Frame|1993|p=24}} At the end of the month, the cruiser joined the escort of [[Malta convoy MB 5]].{{sfn|Frame|1993|p=24}}

On the return voyage, ''Sydney'' and several other vessels were tasked with attacking Italian facilities.<ref name=Hore73>Hore, in Stevens, ''The Royal Australian Navy in World War II'', p. 73</ref> Canvas and timber were used to alter the cruiser's profile to resemble an Italian [[Condottieri-class cruiser|''Condottieri''-class cruiser]], allowing her to manoeuvre close to [[Scarpanto]] during the night of 3–4 September.{{sfn|Winter|1984|p=18}} At dawn, ''Sydney'' and the British destroyer ''Ilex'' attacked the Italian [[Makri Yalo Airbase]] at Scarpanto; the cruiser fired 135 shells in 25 minutes, while the destroyer fended off five [[E-boat]]s, sinking two.{{sfn|Gill|1957|p=210}} On completion, the two ships rejoined the fleet, but were again mistaken for Italian warships and nearly fired on before ''Sydney'' raised the [[White Ensign]] and cut down her disguise.{{sfn|Winter|1984|p=18}} Admiral Cunningham congratulated ''Sydney'' with the message "Well Done. You are a stormy petrel.", which was adopted as a nickname for the cruiser.{{sfn|Winter|1984|p=18}} On her return to Alexandria, the Australian cruiser underwent another short refit, which was completed late in the month: on 24 September ''Sydney'' supported {{HMS|Protector|A146|6}} during the interception of a French merchant ship, then completed a two-day patrol west of Cyprus.{{sfn|Frame|1993|p=24}}{{sfn|Gill|1957|p=222}} Late on 28 September, ''Sydney'' joined the heavy escort of a Malta-bound troop convoy.{{sfn|Gill|1957|p=222}} During the return voyage, ''Sydney'' and {{HMS|Orion|85|6}} left the fleet on 1 October for a sweep of the Aegean Sea, which was concluded with a brief bombardment of Maltezana before returning to Alexandria two days later.<ref name=Hore73/>

[[File:HMAS Sydney 1934 crew.jpg|thumb|right|Group portrait of the 645-strong ship's company following the action against ''Bartolomeo Colleoni'' in July 1940]]
The entire Mediterranean fleet sailed from Alexandria on 8 October to provide cover for several Malta Convoys, and attempt to draw the Italian fleet into battle.<ref name=Hore74>Hore, in Stevens, ''The Royal Australian Navy in World War II'', p. 74</ref> The convoys reached their destination safely, and the operation was uneventful for ''Sydney''; the only contact with Italian forces was [[Battle of Cape Passero (1940)|an engagement]] during the early morning of 12 October between the British cruiser {{HMS|Ajax|22|2}} and seven Italian torpedo boats and destroyers, of which ''Ajax'' sank three and damaged a fourth.<ref name=Hore74/> From 25 October, ''Sydney'', ''Orion'', and the destroyers {{HMS|Jervis|F00|2}} and {{HMS|Juno|F46|2}} were engaged in a sweep of the Aegean for Axis vessels, reaching as far north as the Dardanelles.{{sfn|Gill|1957|p=226}} No major incidents occurred until 28 October, when the [[Greco-Italian War|Italians invaded Greece]]: the four ships were recalled to Alexandria, where they arrived that evening.{{sfn|Gill|1957|p=226}} Shortly after, the two cruisers were joined by HM Ships {{HMS|York|90|2}} and {{HMS|Gloucester|C62|2}} and met the main force of the Mediterranean fleet west of Crete on 30 October.{{sfn|Gill|1957|p=230}} Over the next few days, the warships patrolled around Crete and along the Greek mainland, and provided cover for the first supply convoy to Crete.{{sfn|Gill|1957|p=230}}

On 5 November, ''Sydney'' and {{HMS|Ajax|22|6}} departed from Port Said with military equipment to be used to establish an Allied advanced base at [[Souda Bay]], Crete.{{sfn|Frame|1993|p=25}} After delivering the equipment, which included almost 1,000 soldiers, the equipment for a Bofors battery, cases of food, and several trucks, the cruisers rejoined the main fleet.{{sfn|Frame|1993|p=25}}{{sfn|Gill|1957|p=231}} The Mediterranean Fleet remained on patrol for several days, and during the night of 11–12 November, while the bulk of the fleet supported the world's first all-naval-aircraft [[Battle of Taranto|attack on the Italian fleet anchored in Taranto]], ''Sydney'', ''Ajax'', ''Orion'' and the destroyers {{HMS|Nubian|F36|2}} and {{HMS|Mohawk|F31|2}} attempted to transit the Strait of Otranto as a diversion.{{sfn|Gill|1957|p=231}} Despite the mission of "looking for trouble", the northbound passage through the strait passed without incident.{{sfn|Gill|1957|p=231}} The return was not so uneventful: at 01:20, a convoy of four merchantmen with two escorting destroyers was spotted by ''Sydney''{{'}}s lookouts.{{sfn|Gill|1957|pp=231–32}} The Allied warships manoeuvred in close, and opened fire at 01:27: ''Sydney'' directing her fire onto a freighter {{convert|7000|yd|m}} away.{{sfn|Gill|1957|p=232}} During the 23-minute engagement, the cruiser successfully contributed to the destruction of three merchant ships and damaged a destroyer, avoided a torpedo, and unsuccessfully fired two in return.{{sfn|Gill|1957|p=232}} At 01:57, the undamaged Allied force departed the strait, and met the main fleet before midday.{{sfn|Gill|1957|p=232}}

From 15 to 20 November, ''Sydney'' and three other cruisers transported 4,000 Allied soldiers and their equipment from Alexandria to the Piraeus as reinforcements for the Greek military.<ref name=Hore75>Hore, in Stevens, ''The Royal Australian Navy in World War II'', p. 75</ref>{{sfn|Gill|1957|p=237}} On returning to Alexandria, ''Sydney'' deployed with the majority of the Mediterranean fleet to cover multiple convoys across the sea: the Australian cruiser spent the remainder of the month operating throughout the eastern and central Mediterranean, and was bombed by Italian aircraft on 24 November at Souda Bay, but escaped damage.{{sfn|Gill|1957|p=237}} ''Sydney'' started December in the Aegean, where she escorted convoys and shelled the port of Valona, then proceeded to Malta for a refit and repairs to her rudder, which lasted until the end of the year.{{sfn|Frame|1993|p=25}}<ref name=Hore75/> During this refit, the cruiser was fitted with [[degaussing]] equipment.{{sfn|Olson|2000|p=30}} The ship rejoined the fleet on 8 January 1941, when she was instructed to head home after proceeding along the north coast of Africa and linking up with any Australia-bound merchant ships she encountered.{{sfn|Frame|1993|p=25}} The recall was attributed to the need to bring ''Sydney'' in for a major refit and give her personnel leave, a plan to spread combat experience throughout the RAN by trading the cruiser with her sister ship, {{HMAS|Perth|D29|2}}, and a need to protect Australia against the [[Axis naval activity in Australian waters#German surface raiders in 1940|German merchant raiders operating in the area]], particularly following the [[German attacks on Nauru|attacks on Nauru]].{{sfn|Cassells|2000|p=150}}<ref>Goldrick, in Stevens, ''The Royal Australian Navy'', pp. 110–11</ref><ref>Grove, in Stevens, ''The Royal Australian Navy in World War II'', p. 42</ref>

[[File:HMAS Sydney at Circular Quay.jpg|thumb|left|alt=A two-funnelled cruiser slowly manoeuvring into position next to a wharf. Several small boats surround the cruiser, and a large crowd waits behind the wharf fence. The Sydney Harbour Bridge and northern shore of the harbour are in the background.|''Sydney'' manoeuvring to come alongside at Sydney Cove on 10 February 1941]]
Before leaving, 100 of the ship's company were removed on 11 January, so they could be sent to England to help man the new [[J, K and N-class destroyer|N-class destroyers]].{{sfn|Winter|1984|p=53}} The next day, the ship sailed for Aden via the Suez Canal.{{sfn|Winter|1984|p=53}} ''Sydney'' and the [[troopship]] {{Ship|RMS|Empress of Canada|1922|2}} left Aden on 16 January to join [[Convoy SW 4B]], which ''Sydney'' escorted until relieved by {{HMS|Ceres|D59|6}} four days later.{{sfn|Winter|1984|p=53}} The Australian cruiser was instructed to attack any Italian ships at [[Mogadiscio]], but as there were no large merchant ships in port and ''Sydney'' was forbidden to attack the harbour itself, she then proceeded to the [[Seychelles]] to refuel.{{sfn|Winter|1984|p=53}} On 24 January, ''Sydney'' was one of several warships which responded to an attack on the merchantman ''Mandasor'' by the German merchant raider [[German auxiliary cruiser Atlantis|''Atlantis'']].{{sfn|Winter|1984|p=53}} Despite a three-day search, ''Sydney'' did not come into contact with ''Atlantis''.{{sfn|Winter|1984|p=53}} ''Sydney'' resumed her voyage home, and arrived in her namesake city after sunset on 9 February.{{sfn|Frame|1993|p=25}} The cruiser anchored in [[Watsons Bay]] for the night, then sailed into the inner harbour the next morning and tied up alongside at [[Sydney Cove]] to a heroes' welcome.{{sfn|Frame|1993|p=25}}{{sfn|Mearns|2009|p=18}} On 11 February, a holiday was declared for school students in Sydney, so they could join the thousands of people who witnessed the ship's company perform a [[Freedom of the City|freedom of entry]] march.{{sfn|Mearns|2009|p=18}}

As well as the battle honours for the battles at Calabria and Cape Spada, ''Sydney'' was granted the "Mediterranean 1940" battle honour for her various actions during the [[Battle of the Mediterranean|Mediterranean naval campaign]].{{sfn|Cassells|2000|p=151}} During the eight-month deployment, the only fatality in the ship's company was a death due to illness.{{sfn|Cassells|2000|p=163}}

===Australian waters===
Following a short refit, ''Sydney'' sailed for Fremantle on 27 February, where she was assigned to escort and patrol tasks in the Indian Ocean.<ref name=Hore76/> This primarily involved meeting convoys off the southern Australian coast and escorting them on the next leg of their journey, either westbound to the Middle East and Europe, or northwards to the Dutch East Indies.<ref name=Hore76>Hore, in Stevens, ''The Royal Australian Navy in World War II'', p. 76</ref>

In April, ''Sydney'' escorted the troopship ''[[RMS Queen Mary|Queen Mary]]'' from Fremantle to Jervis Bay, before embarking Admiral [[Ragnar Colvin]] and a party of advisors from all three branches of the Australian military and transporting them to Singapore by 19 April for a secret conference between the British Commonwealth, the Netherlands East Indies, and the United States of America.{{sfn|Gill|1957|p=430}} The cruiser returned to Fremantle before month's end, after which Collins handed command over to Captain [[Joseph Burnett]] on 15 May.{{sfn|Frame|1993|p=26}} Shortly after, the cruiser escorted the transport [[SS Zealandia (1910)|SS ''Zealandia'']] during a troop transport run to Singapore.{{sfn|Gill|1957|p=436}} ''Sydney'' escorted the troopship to Sunda Strait, where responsibility was handed over to the British light cruiser {{HMS|Danae|D44|6}}.{{sfn|Gill|1957|p=436}}

In early June, ''Sydney'' met ''Zealandia'' and ''Danae'' on the troopship's return voyage, and took over escort duties from Sunda Strait back to Fremantle.{{sfn|Gill|1957|p=451}} After replenishing in Fremantle, ''Zealandia'' joined a multiple ship convoy to the east coast of Australia, which was also escorted by ''Sydney''.{{sfn|Gill|1957|p=451}} The convoy departed on 24 June and made for Sydney, after which the cruiser joined the escort of a Pacific convoy before returning for maintenance.{{sfn|Frame|1993|p=26}}{{sfn|Gill|1957|p=451}} This concluded on 8 August, when ''Sydney'' escorted the troopship [[HMT Awatea|''Awatea'']] to New Zealand, then Fiji.{{sfn|Frame|1993|p=26}}

[[File:Troop transports Queen Mary and Queen Elizabeth.jpg|thumb|right|alt=Photograph of the stern and wake of a ship. Two more ships are following in the distance. There is a rocky island to the right.|The troopships ''[[RMS Queen Mary|Queen Mary]]'' (right) and [[RMS Queen Elizabeth|''Queen Elizabeth'']] (left) sailing in Bass Strait, as seen from the stern of ''Sydney'']]
On her return to Sydney at the end of August, the cruiser joined the troopships ''Queen Mary'' and [[RMS Queen Elizabeth|''Queen Elizabeth'']] during the first leg of their voyage ([[Anzac convoy US 12A]]), escorting them until rendezvousing with ''Canberra'' in the Great Australian Bight.{{sfn|Winter|1984|p=101}} ''Sydney'' then sailed to Melbourne, and remained until 19 September, during which her camouflage was repainted in a new pattern.{{sfn|Olson|2000|p=30}}{{sfn|Winter|1984|p=101}} The cruiser then escorted the four-ship [[Anzac convoy US 12B]] to Fremantle: heavy seas while crossing the Great Australian Bight caused "A" turret to become jammed on a port facing.<ref name=Cole61.2>Cole, ''The Loss of HMAS Sydney II'', vol. 1, pp. 61–62</ref> This was repaired in Fremantle, and the convoy proceeded to Sunda Strait, where ''Sydney'' handed the merchant ships over to the British cruisers {{HMS|Glasgow|C21|2}} and ''Danae'' on 3 October and set course for Fremantle.<ref name=Cole61.2/>{{sfn|Winter|1984|p=115}} On the night of 5–6 October, a mysterious ship that responded to challenge signals near Rottnest Island then disappeared led the Naval Officer in Charge Fremantle to believe that the approaches to the harbour had been mined.{{sfn|Frame|1993|p=28}} ''Sydney'' was diverted to intercept ''Queen Mary'' before the troopship reached Fremantle, and ordered to remain with her until a channel was swept and found free of mines.{{sfn|Frame|1993|p=28}} After reaching port on 7 October, ''Sydney'' officially assumed patrol and escort duties in Western Australian waters.{{sfn|Gill|1957|p=451}}

The next few weeks were uneventful for ''Sydney'', and between 18 and 29 October, the cruiser visited [[Geraldton, Western Australia|Geraldton]] and [[Bunbury, Western Australia|Bunbury]].{{sfn|Winter|1984|p=119}} On 2 November, the Australian cruiser sailed to meet ''Zealandia'' off Albany.{{sfn|Winter|1984|p=120}} The troopship was on a second troop transport run to Singapore; delivering the [[8th Division (Australia)|8th Division]].{{sfn|Olson|2000|p=33}} The two ships returned to Fremantle, and on 11 November, they departed for Sunda Strait.{{sfn|Olson|2000|p=33}} ''Zealandia'' was handed over on 17 November to {{HMS|Durban|D99|6}} for the next leg, and the Australian cruiser turned for home: she was scheduled to arrive in Fremantle late on 20 November.{{sfn|Olson|2000|p=33}}

==Final battle and loss==
{{main|Sinking of HMAS Sydney}}
:''Note: all times in this section are [[UTC+7]]''
On the afternoon of 19 November 1941, ''Sydney'' was off the coast of Western Australia, near [[Carnarvon, Western Australia|Carnarvon]], and heading south towards Fremantle.{{sfn|Gill|1957|p=453}} Around 15:55, the cruiser spotted a merchant ship on a northbound course, which quickly turned away from the coast at {{convert|14|kn}}.{{sfn|Gill|1957|p=453}} ''Sydney'' increased speed to {{convert|25|kn}} and made to intercept.{{sfn|Gill|1957|p=453}}<ref name=Hore78>Hore, in Stevens, ''The Royal Australian Navy in World War II'', p. 78</ref> As she closed the gap, ''Sydney'' began to signal the unidentified merchantman, first by signal light, then after no reply was forthcoming and the distance between the two ships had decreased, by a combination of light and signal flag.{{sfn|Frame|1993|p=104}}{{sfn|Olson|2000|pp=178–97}}

The merchant ship hoisted her callsign, but as she was ahead and just port of ''Sydney'', the flags were obscured by the funnel.{{sfn|Olson|2000|p=179}} The cruiser sent a request that the merchant ship make her signal letters clear, which the signals officer did by lengthening the [[halyard]] and swinging the flags clear.{{sfn|Gill|1957|p=453}}{{sfn|Olson|2000|p=179}} The callsign was that of the Dutch ship ''Straat Malakka'', but she was not on ''Sydney''{{'}}s list of ships meant to be in the area.{{sfn|Gill|1957|p=453}} Further flag signals were exchanged between the ships, with ''Sydney'' asking the Dutch ship's destination and cargo.{{sfn|Gill|1957|pp=453–54}}{{sfn|Olson|2000|pp=181–85}}

At 17:00, a distress signal was transmitted by ''Straat Malakka'', indicating that she was being pursued by a [[merchant raider]].{{sfn|Olson|2000|p=85}} Following this, ''Sydney'' pulled alongside the merchant ship from astern; pacing the merchantman on a parallel course, approximately {{convert|1300|m|ft}} away.{{sfn|Gill|1957|p=454}} ''Sydney''{{'}}s main guns and port torpedo launcher were trained on the ship, while she sent the interior portion of ''Straat Malakka''{{'}}s secret callsign.{{sfn|Frame|1993|p=104}}{{sfn|Gill|1957|p=454}} Fifteen minutes later, at around 17:30, the merchantman had not replied, and ''Sydney'' sent a signal ordering her to show the secret callsign.{{sfn|Gill|1957|p=454}}

[[File:Bundesarchiv Bild 146-1985-117-02A, Hilfskreuzer Kormoran.jpg|thumb|left|The auxiliary cruiser ''Kormoran'' in 1940]]
''Straat Malakka'' had not replied because she was the German [[auxiliary cruiser]] {{Ship|German auxiliary cruiser|Kormoran||2}} in disguise, and when asked to reveal a callsign the Germans did not know, ''Kormoran'' responded by decamouflaging and opening fire.{{sfn|Gill|1957|p=454}}{{sfn|Olson|2000|p=195}} Prompted by the raider's unveiling, ''Sydney'' also fired (accounts are divided as to which ship fired first), but while her first salvo either missed or passed through ''Kormoran''{{'}}s upper superstructure with minimal damage, four of the raider's six {{convert|15|cm|in|adj=on}} guns (the other two guns were on the port side and could not fire to starboard) were able to destroy the cruiser's bridge and gun director tower, damage the forward turrets, and set the aircraft on fire.{{sfn|Gill|1957|p=454}}{{sfn|Olson|2000|pp=216–18, 234, 248–49}}

''Sydney'' did not fire again until after the raider's sixth salvo: "Y" turret fired without effect, but "X" turret was able to put multiple shells into ''Kormoran'', damaging machinery spaces and one of the raider's guns, while igniting an oil tank.{{sfn|Gill|1957|p=454}}{{sfn|Olson|2000|pp=234–35}} During this, ''Kormoran'' maintained heavy fire, and around the time of the eighth or ninth German salvo, a torpedo launched at the start of the engagement hit ''Sydney'' just forward of "A" turret and near the [[ASDIC]] compartment (the weakest point on the ship's hull), ripping a hole in the side and causing the bow of the cruiser to angle down.{{sfn|Olson|2000|p=249}}{{sfn|Mearns|2009|pp=37, 205}} Down by the bows, the cruiser swung hard to port, and passed behind ''Kormoran''; during the turn, shells from the raider knocked "B" turret off ''Sydney''.{{sfn|Gill|1957|p=454}}{{sfn|Olson|2000|p=234}}{{sfn|Mearns|2009|p=37}}

By 17:35, ''Sydney'' was heading south and losing speed, wreathed in smoke from multiple fires.{{sfn|Olson|2000|p=249}}{{sfn|Gill|1957|p=456}} Her main armament was disabled (the two aft turrets had jammed on a port facing and could not be swung around), and her secondary guns were out of effective range.{{sfn|Olson|2000|p=268}} The cruiser continued to be hit by shells from ''Kormoran''{{'}}s aft guns as the distance between the ships increased.{{sfn|Gill|1957|p=456}}{{sfn|Olson|2000|p=250}} The Germans reported that around 17:45, all four torpedoes from ''Sydney''{{'}}s starboard launcher were fired, but as ''Kormoran'' was manoeuvring to bring her port broadside to bear, they all missed.{{sfn|Gill|1957|p=456}}{{sfn|Olson|2000|pp=258–59}} In fact, only two torpedoes from ''Sydney''{{'}}s port launcher were ever fired, which must have happened some time earlier.<ref>Cole, ''The Loss of HMAS Sydney II'', vol. 1, pp. 255–60</ref> The raider's engines broke down after this turn, but she continued to fire on ''Sydney'' at a high rate despite being immobilised, although many of the shells would have missed as the distance between the two ships increased.{{sfn|Olson|2000|pp=259–60}} ''Kormoran'' ceased fire at 17:50, with the range at {{convert|6600|yd|m}}, and launched another torpedo at 18:00, but missed ''Sydney''.{{sfn|Gill|1957|p=456}}

The Australian cruiser continued on a south-south-east heading at low speed; observers aboard ''Kormoran'' doubted that ''Sydney'' was under control.{{sfn|Gill|1957|p=456}} Although disappearing over the horizon shortly later, the glow from the damaged, burning warship was consistently seen by the Germans until about 22:00, and sporadically until midnight.{{sfn|Gill|1957|p=456}} At some point during the night, ''Sydney'' lost buoyancy and sank: the bow was torn off as she submerged and descended almost vertically, while the rest of the hull glided {{convert|500|m|ft}} forward as she sank, hitting the bottom upright and stern first.{{sfn|Mearns|2009|pp=204–05}}<ref name=2Cole357.66>Cole, ''The Loss of HMAS Sydney II'', vol. 2, pp. 357–66</ref> ''Sydney''{{'}}s shells had crippled ''Kormoran''; the German sailors abandoned ship after it was determined that below-deck fires could not be controlled before they reached the gun magazines or the mines in the cargo hold.{{sfn|Gill|1957|p=456}}{{sfn|Olson|2000|p=263}} The raider was [[scuttling|scuttled]] at midnight, and sank slowly until the mine deck exploded half an hour later.{{sfn|Gill|1957|p=456}}

===Aftermath===
''Sydney''{{'}}s failure to reach Fremantle on 20 November was not initially cause for concern, as several factors might have delayed the cruiser, none of which were sufficient reason to break the order to maintain wireless silence.{{sfn|Gill|1957|p=451}}{{sfn|Olson|2000|p=34}} However, with no sign of the cruiser by 23 November, shore-based wireless stations began transmitting orders for ''Sydney'' to break silence and report in.{{sfn|Gill|1957|p=451}} A raft of German survivors was recovered by a British tanker on 24 November, at which point a large-scale air and sea search began.{{sfn|Frame|1993|p=5}} During this search, which lasted until the evening of 29 November 318 survivors from ''Kormoran''{{'}}s 399 personnel were found, but apart from a [[carley float]] and a lifebelt, nothing from ''Sydney'' or the 645 aboard was recovered.{{sfn|Olson|2000|p=72}}

[[File:HMAS Sydney memo.jpg|thumb|right|alt=|Memo from [[Frederick Shedden]], Secretary to the War Cabinet, to Prime Minister [[John Curtin]]; the first formal advice to the Prime Minister that ''Sydney'' was believed lost.]]
Australian Prime Minister [[John Curtin]] officially announced the loss of the cruiser during the afternoon of 30 November.{{sfn|Frame|1993|p=10}} ''Sydney''{{'}}s destruction was a major blow to Australian morale and military capability: her ship's company made up 35 percent of the RAN's wartime casualties.<ref name=Jeans>Jeans, ''Seafaring Lore and Legend'', pp. 189–91</ref> The cruiser's loss did not have the same impact internationally; [[Japan]] entered World War II with attacks on [[Attack on Pearl Harbor|Pearl Harbor]] on 7 December, just over a week after ''Sydney''{{'}}s loss was announced, and [[Sinking of Prince of Wales and Repulse|two British capital ships were destroyed within a fortnight]], with the [[Fall of Singapore]] following shortly after.{{sfn|Olson|2000|p=73}}

The German survivors were taken to Fremantle and [[Sinking of HMAS Sydney#Interrogation of survivors|interrogated]].{{sfn|Frame|1993|p=80}} Attempts to learn what had happened were hampered by the German officers instructing their sailors to obfuscate the enemy with false answers, people describing events they did not witness but heard of later, and difficulty in keeping groups separated in order to check their stories against each other.{{sfn|Frame|1993|pp=80, 140}} Despite this, Australian authorities were able to piece together the broad details of the battle, which was verified by a group of German sailors who had been taken to Sydney instead: their interviews showed the same commonalities and inconsistencies as those from Fremantle, and the interrogators concluded that the true story was being recounted.{{sfn|Frame|1993|p=106}}<ref>Cole, ''The Loss of HMAS Sydney II'', vol. 1, p. 393</ref> Interrogations were concluded in December, and by the end of January, ''Kormoran''{{'}}s personnel had been moved to [[prisoner-of-war camp]]s in Victoria, where they remained until their repatriation to Germany in early 1947.{{sfn|Olson|2000|p=111}}{{sfn|Frame|1993|p=109}}

On 6 February 1942, a [[Carley float]] containing a dead body was spotted just off [[Christmas Island]] and towed ashore.{{sfn|Olson|2000|p=328}} Examination of [[Thomas Welsby Clark|the raft and its occupant]] led the island's inhabitants to believe that they were from ''Sydney''.{{sfn|Olson|2000|p=329}} Although a 1949 investigation conducted by the Royal Navy stated the raft was not from HMAS ''Sydney'', and while some historians agreed, others concluded that the raft and the body originated from ''Sydney''.{{sfn|Olson|2000|pp=329–32}}{{sfn|Winter|1984|p=241}} The body was exhumed in October 2006 and reburied at Geraldton Cemetery in November 2008, after DNA was extracted.{{sfn|Mearns|2009|pp=112, 238}} On 19 November 2021, Australian Minister for Veterans' Affairs [[Andrew Gee (politician)|Andrew Gee]] announced that comparison of the extracted DNA with that of relatives of ''Sydney'' personnel had identified the sailor as Able Seaman [[Thomas Welsby Clark]] who had joined ''Sydney'' in August 1941, approximately four months before her sinking.<ref>{{cite web |title=Unknown HMAS Sydney II sailor named after 80 years |publisher=Australian Government, Department of Defence |date=19 November 2021 |url=https://www.minister.defence.gov.au/minister/andrew-gee/media-releases/unknown-hmas-sydney-ii-sailor-named-after-80-years |access-date=21 November 2021 |archive-date=28 July 2022 |archive-url=https://web.archive.org/web/20220728020023/https://www.minister.defence.gov.au/minister/andrew-gee/media-releases/unknown-hmas-sydney-ii-sailor-named-after-80-years |url-status=live }}</ref><ref>{{cite news |last=Barlass |first=Tim |date=19 November 2021 |title=Unknown sailor from HMAS Sydney was engaged to be married, family says |url=https://www.smh.com.au/national/named-after-80-years-the-unknown-sailor-from-hmas-sydney-20211118-p59a8o.html |work=Sydney Morning Herald |access-date=19 November 2021 |archive-date=18 November 2021 |archive-url=https://web.archive.org/web/20211118230452/https://www.smh.com.au/national/named-after-80-years-the-unknown-sailor-from-hmas-sydney-20211118-p59a8o.html |url-status=live }}</ref>

===Controversy===
[[File:Carley float from HMAS Sydney at the AWM January 2022.jpg|thumb|The [[carley float]] recovered from HMAS ''Sydney'' on display at the [[Australian War Memorial]]]]
{{main|Sinking of HMAS Sydney#Controversy}}
The battle between ''Sydney'' and ''Kormoran'' is seen as controversial: the disbelief that a modified merchant ship could so successfully defeat a cruiser combined with the lack of Australian survivors led some to believe that the German account was false.<ref name=Jeans/>{{sfn|JCFADT|1999|p=1}} Rumours that the battle was not what it seemed had been around since ''Sydney'' failed to reach Fremantle on schedule in 1941, but several historians (including [[Tom Frame (bishop)|Tom Frame]] and Wesley Olson) credit Michael Montgomery and his 1980 book ''Who Sank The Sydney?'' with igniting the controversy.{{sfn|Frame|1993|pp=135–39}}{{sfn|Olson|2000|pp=74–55}}

The main claims made by supporters of an alternative view of the engagement include: that the Germans fired on ''Sydney'' before raising their [[battle ensign]], or after using a [[White flag|flag of surrender]] or signals of distress to lure the cruiser in, that a Japanese submarine was partially or completely responsible for sinking ''Sydney'', that the involvement of the Japanese was covered up to [[Pearl Harbor advance-knowledge debate|lure the United States into the war]], and that Australian survivors were killed in the water to eliminate witnesses.<ref name=Jeans/><ref>Montgomery, ''Who Sank The Sydney?'', pp. 109, 135–37, 205</ref>{{sfn|Frame|1993|pp=138, 216–24}}{{sfn|Olson|2000|pp=319–21, 339–41}} Other claims, less widely heard, include a belief that ''Sydney'' was not at [[action stations]] and thus not prepared for ''Kormoran''{{'}}s attack, distress calls from the cruiser were heard by Australian shore facilities but ignored, and that survivors were captured then executed by the Japanese.<ref>Montgomery, ''Who Sank The Sydney?'', pp. 121, 132</ref>{{sfn|Olson|2000|pp=104–05, 121–22, 219–26, 347–48}}{{sfn|Frame|1993|pp=187–88}}

These claims have been proven false by historians and researchers; the 1998 inquiry by the Joint Standing Committee for Foreign Affairs, Defence and Trade concluded that the German accounts were a "feasible" interpretation of the battle, but there was no reliable evidence to support any of the alternative claims, while the 2009 report for the [[Terence Cole (jurist)|Cole]] Inquiry (the third volume of which was completely dedicated to the "frauds, conspiracies and speculations" surrounding the battle) found nothing to substantiate any of the theories raised.{{sfn|JCFADT|1999|pp=48, 64, 67, 97}}<ref>Cole, ''The Loss of HMAS Sydney II'', vol. 1, pp. xxvii–xxix</ref>

In addition, most researchers have speculated as to [[Sinking of HMAS Sydney#Why Burnett approached so close|why ''Sydney'' was so close]] to an unknown vessel, with various levels of blame assigned to Captain Burnett for the demise of his ship.{{sfn|Frame|1993|pp=129–35}} Theories to explain Burnett's actions include that he was inexperienced or incompetent, deceived by ''Kormoran''{{'}}s disguise, the idea that he was under conflicting orders instructing that raiders be attacked at range but enemy supply ships be captured, or that he was trying to clearly identify the merchantman.{{sfn|Gill|1957|pp=456–57}}{{sfn|Olson|2000|pp=112, 164–65, 183–87}}<ref name=2Cole387>Cole, ''The Loss of HMAS Sydney'', vol. 2, p. 387</ref>

==Search and rediscovery==
{{main|Search for HMAS Sydney and German auxiliary cruiser Kormoran}}
Despite the approximate position of ''Kormoran'' being known (most German accounts giving the battle coordinates as {{coord|26|S|111|E|display=inline}}), the required search area for both ships was immense.{{sfn|Olson|2000|p=47}}{{sfn|JCFADT|1999|p=138}} Calculating a search area was complicated by the fact that several people distrusted the German location, and believed the ships would be found further south and closer to shore.{{sfn|Mearns|2009|pp=80, 90–92, 96–97}}{{sfn|Frame|1993|p=225}}{{sfn|McCarthy|2002|p=5}} Several attempts to bring supporters of the 'northern' and 'southern' positions to a consensus and narrow down the potential search area were unsuccessful.{{sfn|McCarthy|2002|pp=4, 6–7}}

Multiple searches were carried out by the RAN between 1974 and 1997 (using the survey ship {{HMAS|Moresby|1963|6}} and later the trials ship {{HMAS|Protector|ASR 241|6}}), but efforts were restricted to the continental shelf, and were usually in response to civilian claims that they had found ''Sydney'' at a certain location.{{sfn|JCFADT|1999|p=139}}{{sfn|McCarthy|2002|pp=2–3}} Other searches were conducted by RAAF aircraft carrying [[magnetometer]]s; again, these were only in response to possible location claims.{{sfn|McCarthy|2002|pp=2–3}} These searches failed to find either ship.

American shipwreck hunter [[David Mearns]] first learned of the battle in 1996, and began to study it as a prelude to a search for the ships in 2001.{{sfn|Mearns|2009|pp=61, 77}} Mearns, with the aid of other researchers, focused on primary sources (rediscovering several archive files and diaries in the process), and came to the conclusion that the German accounts were true, and that the ship would be found at the northern position.{{sfn|Mearns|2009|pp=80–93, 121}} After attracting the interest of the RAN, Mearns entered into a partnership with HMAS Sydney Search, a not-for-profit company set up to administer and help fund an expedition to locate ''Sydney'' and ''Kormoran''.{{sfn|Mearns|2009|pp=93–95}} State and Federal government grants totalling just under A$5 million, coupled with private and corporate donations, were used to fund a 45-day search from the end of February to early April 2008.{{sfn|Mearns|2009|pp=110–15, 127}}{{sfn|McCarthy|2002|p=9}}

{{Location map many|Australia Shark Bay |border= |alt= |caption=Location of the two shipwrecks |float=right |width=200 |places=
|mark1=Steel pog.svg|coordinates1={{coord|26|05|49.4|S|111|4|27.4|E}}|position1=top|label1=Kormoran
|mark2=Steel pog.svg|coordinates2={{coord|26|14|37|S|111|13|3|E}}|position2=right|label2=Sydney
}}
Mearns' plan was to inspect a {{convert|52|by|34|nmi|adj=on}} search box around the German location with a deep-water, towed [[side-scan sonar]] to locate ''Kormoran'', after which the search team would be able to narrow down the search area for ''Sydney''.{{sfn|Mearns|2009|pp=121–22, 137}} After locating one or both vessels, the search ship (survey vessel SV ''Geosounder'', chartered from the [[subsea]] exploration company [[DOF Subsea]] Australia) would return to port and replace the sonar with a [[remotely operated vehicle]] (ROV) to photograph and video the wrecks.{{sfn|Mearns|2009|pp=126–27}}

After problems with equipment and weather, ''Geosounder'' commenced the search, and located ''Kormoran'' on 12 March 2008 at {{coord|26|05|46|S|111|04|33|E|display=inline}}.{{sfn|Mearns|2009|pp=143–49, 217}} Using the newly discovered wreck and the accounts of the Germans describing ''Sydney''{{'}}s heading, speed, and last sighting after the battle, a {{convert|20|by|18|nmi|adj=on}} search box for the cruiser was calculated: the dramatically smaller area was due to the quality of information regarding ''Sydney''{{'}}s position and heading in relation to ''Kormoran'', while the raider's location consisted of only broad coordinates.{{sfn|Mearns|2009|pp=150–51}}

[[File:HMAS Sydney A turret.jpg|thumb|left|alt=The mangled wreck of a naval gun turret. The photograph has a blue tinge, as it was taken in deep water.|''Sydney''{{'}}s damaged "A" turret]]
''Sydney'' was located on 17 March 2008 just after 11:00, only hours after ''Kormoran''{{'}}s discovery was made public.{{sfn|Mearns|2009|pp=157–58}} News that the cruiser had been found was announced by Prime Minister [[Kevin Rudd]] on 18 March.{{sfn|Mearns|2009|p=160}} ''Sydney''{{'}}s wreck was located at {{coord|26|14|31|S|111|12|48|E|display=inline}} at {{convert|2468|m|ft}} below sea level, {{convert|11.4|nmi}} south-east of the raider.{{sfn|Mearns|2009|pp=158–60}} The bow of the cruiser had broken off as the ship sank, and was located at the opposite end of a debris field stretching less than {{convert|500|m|ft}} north-west from the hull, which was sitting upright on the ocean floor.{{sfn|Mearns|2009|pp=158–60, 204–05}}<ref>Cole, ''The Loss of HMAS Sydney II'', vol. 2, p. 217</ref> On discovery, both wrecks were placed under the protection of the ''[[Historic Shipwrecks Act 1976]]'', which penalises anyone disturbing a protected shipwreck with a fine of up to A$10,000 or a maximum five years imprisonment.{{sfn|Mearns|2009|p=169}} Both wrecks were placed on the [[Australian National Heritage List]] on 14 March 2011.<ref>Australian Associated Press & Australian Geographic Staff, ''HMAS Sydney makes heritage list''</ref>

After the side-scan sonar aboard ''Geosounder'' was switched out for the ROV (again delayed by technical issues and more bad weather), the survey ship returned to ''Sydney''{{'}}s wreck site on 3 April, and performed a detailed study of the ship and her debris field.{{sfn|Mearns|2009|pp=170–74, 189}} Inspections were also carried out on ''Kormoran'' and the believed battle site (the latter found to be outcrops of [[pillow lava]]), before Mearns declared the search over on 7 April.{{sfn|Mearns|2009|pp=215–17, 228}} In April 2015, an expedition to the wrecks by [[Curtin University]] and the [[Western Australian Museum]] commenced, with the objective of using 3D imaging to map the wrecksites for further study, and to determine if any deterioration since the 2008 discovery requires the development of a conservation management plan.<ref>Mundy, ''HMAS Sydney wreck to be recorded in safeguard mission''</ref>

==Awards, memorials, and legacy==
''Sydney'' was granted the battle honour "''Kormoran'' 1941" in recognition of the damage done to ''Kormoran''.{{sfn|Cassells|2000|p=151}} This was one of only three honours awarded during the 20th century for the sinking of a single ship, and the second to a ship named ''Sydney'' (the other had been awarded to [[HMAS Sydney (1912)|the previous ''Sydney'']] for her defeat of the German light cruiser [[SMS Emden (1908)|SMS ''Emden'']] at the [[Battle of Cocos]]).{{sfn|Cassells|2000|p=207}}

[[File:HMAS Sydney Memorial.jpg|thumb|right|alt=|The memorial at Geraldton]]
The main memorial for the loss of ''Sydney'' is located at [[Geraldton, Western Australia|Geraldton]], Western Australia, on top of Mount Scott.{{sfn|McCarthy|2002}} Planning for the memorial commenced in late 1997, after a speech by ''Sydney'' researcher Glenys McDonald at the local [[Rotary International|Rotary]] club.{{sfn|McDonald|2005|p=205}} The first, temporary memorial (consisting of a large boulder, a flagpole, and a bronze plaque), was installed prior to 19 November 1998, and was used in a remembrance ceremony that year.{{sfn|McDonald|2005|p=205}} During the playing of the [[Last Post]], a large flock of seagulls flew over the participants and headed out to sea in formation: this became a major feature of the permanent memorial.{{sfn|McDonald|2005|pp=205–06}} The permanent memorial included four major elements: a [[stele]] of the same size and shape of the ship's prow, a granite wall listing the ship's company, a bronze statue of a woman looking out to sea and waiting in vain for the cruiser to come home, and a dome (dubbed the "dome of souls") onto which 645 stainless steel seagulls were welded.{{sfn|McDonald|2005|p=206}}

The memorial (minus the stele, which had not been completed in time) was dedicated on 18 November 2001, and was used the next evening for a commemoration ceremony marking the 60th anniversary of the ship's loss.{{sfn|McDonald|2005|pp=208–11}} In May 2009, the memorial was recognised by the Australian government as being of national significance.<ref>Minister for Veterans' Affairs, ''HMAS Sydney II Declared a National Memorial''</ref> By 2011, the stele had been completed, and a fifth element—a pool of remembrance containing a map of the region and the marked position of ''Sydney''{{'}}s wreck—had been added.<ref>Robertson, ''HMAS Sydney II Memorial completed in time for the commemorative 70th anniversary''</ref>

[[File:Naval Chapel GI Mel-Syd.JPG|thumb|left|alt=Two tall stained glass windows. The left window shows an aircraft carrier about to launch an aircraft, while the right depicts two cruisers and an aircraft carrier at sea. A memorial plaque sits between the windows.|Memorial windows for the first three [[HMAS Sydney|HMA Ships ''Sydney'']] (right) and the carrier {{HMAS|Melbourne|R21|2}} (left)]]
Other memorials commemorating the loss of ''Sydney'' include an oak tree planted at the Melbourne [[Shrine of Remembrance]], and an avenue in Carnarvon lined with 645 trees.{{sfn|McCarthy|2002}}{{sfn|Winter|1984|p=247}} The service of ''Sydney'', along with the other ships [[HMAS Sydney|of the same name]], is commemorated by a stained-glass window at the [[Naval Chapel, Garden Island NSW|Garden Island Naval Chapel]],{{sfn|Olson|2000|p=369}} and by the mast of the first {{HMAS|Sydney|1912|2}} at [[Bradleys Head, New South Wales|Bradleys Head]], New South Wales. The names of those killed aboard ''Sydney'' are inscribed at the [[Australian War Memorial]].{{sfn|Winter|1984|pp=247–48}}

[[File:Marineehrenmal Laboe - australische Gedenktafel.jpg|thumb|Joint ''Sydney''–''Kormoran'' memorial stone at the [[Laboe Naval Memorial]]]]

In 2011 a memorial stone commemorating both the ''Sydney'' and the ''Kormoran'' was inaugurated by former Australian ambassador to Germany Peter Tesch at the [[Laboe Naval Memorial]] near [[Kiel]], Germany.<ref>{{cite web|url= https://seapower.navy.gov.au/media-room/publications/semaphore-09-21|title=Semaphore: Commemorating the Crews of HMAS Sydney (II) and HSK Kormoran at Home and Abroad|publisher=[[Royal Australian Navy]]|access-date=28 May 2024}}</ref>

The "HMAS Sydney Replacement Fund" was established to help finance the acquisition of a replacement ship.<ref name=ANAM60>ANAM, ''Flying Stations'', p. 60</ref> The [[Australian pound|AU£]]426,000 raised was contributed to the purchase of Australia's first aircraft carrier in the late 1940s; the [[Majestic-class aircraft carrier|''Majestic''-class]] carrier was named {{HMAS|Sydney|R17|6}} upon her commissioning into the RAN in December 1948.<ref name=ANAM60/> This ''Sydney'' operated during the Korean War, then was modified into a troop transport and served in the Vietnam War, before her sale for scrap in 1973.{{sfn|Winter|1984|p=242}}

The [[Supermarine Walrus|Supermarine Seagull V]] aircraft that operated from ''Sydney'' between 1937 and 1938 still survives as part of the collection of the [[Royal Air Force Museum London|Royal Air Force Museum]] at Colindale in north London.<ref>Simpson, ''Individual History: Supermarine Seagull V A2-4/VH-ALB''</ref>

The "HMAS Sydney II Cup" was introduced in 2010 as a commemorative trophy competed for by two [[Australian Football League]] clubs, the [[Sydney Swans]] (representing the ship's namesake) and the [[West Coast Eagles]] (representing the site of the ship's loss), in an annual match.{{sfn|GKTK|2014|p=284}} The trophy is based on the cruiser's [[battle honour board]], while the design of a [[Best On Ground]] trophy for the match's best player is based on a shell casing from [[HMAS Sydney (FFG 03)|the frigate ''Sydney'']].{{sfn|GKTK|2014|p=284}}

==Footnotes==
{{notelist}}

==Citations==
{{reflist}}

==References==
===Books===
* {{cite book | author=Australian Naval Aviation Museum (ANAM) |title=Flying Stations: a story of Australian naval aviation |year=1998 |url=https://trove.nla.gov.au/work/7942183 |publisher=Allen & Unwin |location=St Leonards, NSW |isbn=1-86448-846-8 |oclc=39290180}}
* {{cite book | last=Cassells |first=Vic |title=The Capital Ships: Their Battles and Their Badges |year=2000 |url=https://trove.nla.gov.au/work/6924130 |publisher=Simon & Schuster |location=East Roseville, NSW |isbn=0-7318-0941-6 |oclc=48761594}}
* {{cite book | last=Frame |first=Tom |author-link=Tom Frame (bishop) |title=HMAS Sydney: Loss and Controversy |year=1993 |url=https://trove.nla.gov.au/work/8054392 |publisher=Hodder & Stoughton |location=Rydalmere, NSW |isbn=0-340-58468-8 |oclc=32234178}}
* {{cite book|last=Friedman|first=Norman|title=British Cruisers: Two World Wars and After|year=2010|publisher=Seaforth Publishing|location=Barnsley, UK|isbn=978-1-59114-078-8 |author-link=Norman Friedman}}
* {{cite book | last=Gill |first=George Hermon |author-link=G. Hermon Gill |title=Royal Australian Navy, 1939–1942 |year=1957 |url=https://www.awm.gov.au/collection/RCDIG1070207/ |series=[[Australia in the War of 1939–1945]], Series 2, Volume I |publisher=Australian War Memorial |location=Canberra |oclc=848228}}
* {{cite book |ref={{SfnRef|GKTK|2014}} |title=The Search for HMAS Sydney: An Australian Story |date=2014 |url=https://books.google.com/books?id=gGqIBAAAQBAJ |editor1-last=Graham|editor1-first=Ted |editor2-last=King|editor2-first=Bob |editor3-last=Trotter|editor3-first=Bob |editor4-last=Kirsner|editor4-first=Kim |publisher=UNSW Press |isbn=978-1-74224-691-8 |access-date=24 August 2015}}
* {{cite book | last=Jeans |first=Peter D. |title=Seafaring lore & legend: a miscellany of maritime myth, superstition, fable, and fact |url=https://books.google.com/books?id=2TRxLhG2GiwC |publisher=McGraw-Hill |location=New York; London |year=2004 |isbn=0-07-143543-3 |oclc=56456095}}
* {{cite book | last=McDonald |first=Glenys |title=Seeking the Sydney: a quest for truth |url=https://trove.nla.gov.au/work/11963475 |publisher=University of Western Australia Press |location=Crawley, WA |year=2005 |isbn=1-920694-54-4 |oclc=62557643}}
* {{cite book | last=Mearns |first=David |author-link=David Mearns |title=The Search for the Sydney |year=2009 |publisher=HarperCollins Publishers |location=Pymble, NSW |isbn=978-0-7322-8889-1 |oclc=301679923}}
* {{cite book | last=Montgomery |first=Michael |title=Who Sank The Sydney? |year=1981 |url=https://trove.nla.gov.au/work/10191254 |publisher=Cassell Australia |location=North Ryde, NSW |isbn=0-7269-5476-4 |oclc=7925808}}
* {{Cite book |author-link=Wes Olson |first=Wes |isbn=1-876268-49-2 |language=en |last=Olson |lccn=2001326189 |oclc=45722719 |ol=3990396M |date=2000 |location=Nedlands |publisher=[[UWA Publishing]] |title=Bitter Victory: The Death of HMAS Sydney}}
* {{cite book|last1=Raven|first1=Alan|last2=Roberts|first2=John|title=British Cruisers of World War Two|publisher=Naval Institute Press|location=Annapolis, Maryland|year=1980|isbn=0-87021-922-7|name-list-style=amp}}
* {{cite book|last=Rohwer|first=Jürgen|title=Chronology of the War at Sea 1939–1945: The Naval History of World War Two|publisher=Naval Institute Press|location=Annapolis, Maryland|year=2005|edition=Third Revised|isbn=1-59114-119-2|author-link=Jürgen Rohwer}}
* {{cite book | editor1-last=Stevens |editor1-first=David |title=The Royal Australian Navy |series=The Australian Centenary History of Defence (vol III) |year=2001 |publisher=Oxford University Press |location=South Melbourne, VIC |isbn=0-19-555542-2 |oclc=50418095}}
** {{cite book | last=Goldrick |first=James |title=The Royal Australian Navy |chapter=World War II: The war against Germany and Italy (pp. 103–26)}}
* {{cite book | editor1-last=Stevens|editor1-first=David |title=The Royal Australian Navy in World War II |year=2005 |publisher=Allen & Unwin |location=Crows Nest, NSW |isbn=1-74114-184-2 |oclc=156678255}}
** {{cite book | last=Grove |first=Eric |title=The Royal Australian Navy in World War II |chapter=The Royal Australian Navy in the Mediterranean (pp. 37–50)}}
** {{cite book | last=Hore |first=Peter |title=The Royal Australian Navy in World War II |chapter=HMAS Sydney in World War II (pp. 65–96)}}
* {{Cite book |first=Barbara |isbn=0-908175-72-8 |language=en |last=Winter |lccn=84179353 |oclc=11783441 |ol=2940872M |date=1984 |location=Brisbane |publisher=[[Boolarong Press]] |title=H. M. A. S. Sydney: Fact, Fantasy and Fraud}}
* {{cite book|last=Whitley|first=M. J.|title=Cruisers of World War Two: An International Encyclopedia|publisher=Cassell |location=London|year=1995|isbn=1-86019-874-0|author-link=Michael J. Whitley}}
* {{cite book|last=Westerlund|first=Leslie C |title='Earnest Ramsay': Who was Earnest Ramsay of HMAS Sydney, WA. |year=2021 |isbn=978-1-876141-76-9}}

===Reports and websites===
* {{Cite book |access-date=2024-12-09 |archive-date=19 November 2021 |archive-url=https://web.archive.org/web/20211119055243/https://defence.gov.au/Sydneyii/FinalReport/ |author-link=Terence Cole (jurist) |first=Terence RH |isbn=978-0-642-29712-9 |language=en |last=Cole |oclc=432200965 |date=July 2009 |publication-place=Canberra |publisher=[[Defence Australia]] |title=The Loss of HMAS Sydney II |url=https://defence.gov.au/Sydneyii/FinalReport/}}
* {{cite book |ref={{SfnRef|JCFADT|1999}} |author=Joint Standing Committee on Foreign Affairs, Defence and Trade (JCFADT) |title=Report on the Loss of HMAS Sydney |publisher=The Parliament of the Commonwealth of Australia |location=Canberra |date=22 March 1999 |isbn=0-642-25872-4 |oclc=42768622 |url=http://www.aph.gov.au/house/committee/jfadt/sydney/Reportinx.htm |access-date=9 November 2009 |archive-url=https://web.archive.org/web/20091003010558/http://www.aph.gov.au/house/committee/jfadt/Sydney/Reportinx.htm |archive-date=3 October 2009}}
* {{cite web | url=http://www.museum.wa.gov.au/sydney/ |title=The HMAS Sydney/HSK Kormoran engagement: an analysis of events leading up the 60th anniversary celebrations in November 2001 |last=McCarthy |first=Michael |date=June 2002 |publisher=Western Australian Maritime Museum |access-date=31 October 2010}}
* {{Cite web |url=http://www.rafmuseum.org.uk/london/collections/aircraft/aircraft_histories/73-A-426%20%20Seagull%20V%20A2-4%20(Walrus).pdf |title=Individual History: Supermarine Seagull V A2-4/VH-ALB |first=Andrew |last=Simpson |year=2007 |publisher=Royal Air Force Museum |access-date=27 October 2009 |archive-url=https://web.archive.org/web/20091212034917/http://www.rafmuseum.org.uk/london/collections/aircraft/aircraft_histories/73-A-426%20%20Seagull%20V%20A2-4%20%28Walrus%29.pdf |archive-date=12 December 2009 }}

===News articles===
* {{cite news |url=http://www.australiangeographic.com.au/journal/hmas-sydney-wreck-makes-heritage-list.htm/ |title=HMAS Sydney makes heritage list |work=Australian Geographic |date=15 March 2011 |access-date=23 March 2011 |author=Australian Associated Press & Australian Geographic Staff |archive-url=https://web.archive.org/web/20110318070046/http://www.australiangeographic.com.au/journal/hmas-sydney-wreck-makes-heritage-list.htm |archive-date=18 March 2011}}
* {{cite news|url=http://www.abc.net.au/news/2015-04-27/hmas-sydney-wreck-search-departs/6423976 |title=HMAS Sydney wreck to be recorded in safeguard mission |last=Mundy |first=Garrett |date=27 April 2015 |work=ABC News |publisher=Australian Broadcasting Corporation |access-date=3 May 2015}}
* {{cite news|url=http://www.perthnow.com.au/hmas-sydney-ii-memorial-completejust-in-time-for-the-commemorative-70th-anniversary-of-world-war-ii-naval-battle/story-fn6cmyjj-1226190144514|title=HMAS Sydney II Memorial completed in time for the commemorative 70th anniversary|last=Robertson|first=Katie|date=13 November 2011|work=Perth Now|access-date=13 November 2011}}

===Press releases===
* {{cite press release |title=HMAS Sydney II Declared a National Memorial |publisher=[[Minister for Veterans' Affairs (Australia)|Minister for Veterans' Affairs]] |date=21 May 2009 |url=http://parlinfo.aph.gov.au/parlInfo/download/media/pressrel/PTNT6/upload_binary/ptnt60.pdf |access-date=12 October 2011}}

==Further reading==
* {{cite book |asin=B0007JJ5XC |author-link1=Theodor Detmers |first=Theodor |last=Detmers |language=en |ol=22451411M |date=1959 |location=London |publisher=William Kimber |title=The Raider Kormoran |translator-first=Edward |translator-last=Fitzgerald}}

==External links==
{{commons category|HMAS Sydney (1934)}}
* [https://web.archive.org/web/20110328110009/http://www.naa.gov.au/whats-on/online/showcases/hmas-sydney/ Sinking of the HMAS Sydney] at [[National Archives of Australia]]
* [http://www.findingsydney.com HMAS Sydney Search Pty Ltd, The Finding Sydney Foundation (official website)]
* [http://www.navy.gov.au/hmas-sydney-ii HMAS ''Sydney'' (II), Royal Australian Navy]
* [http://www.museum.wa.gov.au/sydney HMAS ''Sydney'' (II) website, by the Western Australian Museum]
* [http://www.sydneymemorial.com Virtual Memorial to HMAS ''Sydney'' set up by the Finding Sydney Foundation and the Naval Association of Australia]
* [http://www.hmassydneymemorialgeraldton.com.au/ Website for the HMAS ''Sydney'' Memorial at Geraldton]
* [https://archive.today/20110815125902/http://naa16.naa.gov.au/rs_images/ShowImage.php?B=11139723&T=P&S=1 Bullet-riddled Carley life float from HMAS ''Sydney'' in the Australian War Memorial, Canberra]

{{Sydney-Kormoran}}
{{Leander class cruiser 1931}}
{{November 1941 shipwrecks}}
{{Australian historic shipwrecks with a protected zone|state=collapsed}}

{{Good article}}
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{{DEFAULTSORT:Sydney}}
[[Category:Leander-class cruisers (1931) of the Royal Australian Navy]]
[[Category:1934 ships]]
[[Category:World War II cruisers of Australia]]
[[Category:World War II shipwrecks in the Indian Ocean]]
[[Category:Shipwrecks of Western Australia]]
[[Category:Maritime incidents in November 1941]]
[[Category:Australian National Heritage List]]
[[Category:Warships lost in combat with all hands]]
[[Category:Australian Shipwrecks with protected zone]]
[[category:Ships built by Swan Hunter]]