Jury rigging

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File:Jurry rigged rudder.jpg
Model showing a method for jury-rigging a rudder

In maritime transport and sailing, jury rigging or jury-rigging<ref name="Lexico">Template:Cite web</ref> is making temporary makeshift running repairs with only the tools and materials on board. It originates from sail-powered boats and ships. Jury-rigging can be applied to any part of a ship; be it its super-structure (hull, decks), propulsion systems (mast, sails, rigging, engine, transmission, propeller), or controls (helm, rudder, centreboard, daggerboards, rigging).

Similarly, a jury mast is a replacement mast after a dismasting.<ref name=OEDjurymast>Template:Cite book</ref> If necessary, a yard would also be fashioned and stayed to allow a watercraft to resume making way.

Etymology

The Oxford English Dictionary states that jury-mast is "Of unknown origin", adding "Apparently either a corruption of some earlier name, or a jocular appellation invented by sailors. For the suggestion that it may have been short for injury-mast, no supporting evidence has been found." It defines it as "Nautical: A temporary mast put up in place of one that has been broken or carried away." and the earliest citation given is from 1616, with the spelling lury mast.<ref>Template:Cite OED</ref>

The 1881 edition of Brewer's Dictionary of Phrase and Fable defines Jury Mast as "A corruption of joury mast, i.e. a mast for the day, a temporary mast, being a spar used for the nonce when the mast has been carried away. (French, jour, a day)",<ref>Template:Cite book</ref> but the 1970 Centenary Edition of the same work states that "the etymology of 'jury' here is a matter of surmise".<ref>Template:Cite book</ref> A further suggested derivation is from the old French ajurie (aid).<ref>Template:Cite web</ref>

Rigging

File:Jury-mast-knot-variations.jpg
Three variations of the jury mast knot.

A sail-powered boat may carry a limited amount of repair materials, from which some form of jury-rig can be fashioned. Additionally, anything salvageable, such as a spar or spinnaker pole, could be adapted to carry a makeshift sail.

Ships typically carried a selection of spare parts such as topmasts. However, due to their much larger size, at up to Template:Convert in diameter, the lower masts were too large to carry as spares. Example jury-rig configurations include:

  • A spare topmast
  • The main boom of a brig
  • Replacing the foremast with the mizzenmast (mentioned in William N. Brady's The Kedge Anchor, or Young Sailors' Assistant, 1852)
  • The bowsprit set upright and tied to the stump of the original mast.

The jury mast knot may provide anchor points for securing makeshift stays and shrouds to support a jury mast, although there is differing evidence of the knot's actual historical use.<ref name=Hamel1>Template:Cite web</ref><ref name=Hamel2>Template:Cite web</ref><ref name=Hamel3>Template:Cite web</ref>

Jury-rigs are not limited to sail-powered boats. Any unpowered watercraft can carry jury sail. A rudder, tiller, or any other component can be jury-rigged by improvising a repair out of materials at hand.<ref name=Lexico/>

Similar terms

See also

References

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Further reading

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