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1 The name of a small coastal trading vessel of the 16th and 17th centuries, single masted with a square sail and, occasionally, a topsail set above it. They ranged up to about 40–50 tons burthen.

2 A name also given to a small wooden cask, wider at the bottom than at the top, in which grog was carried to the seamen's messes in British Navy ships after issue from the grog-tub, and which it was common practice to bleed en route. The name lingered on as a description of the metal mess kettles in which grog was later carried.

3 The name given to a form of marine steam reciprocating engine where two engines, either single cylinder or compound, were used together in tandem on the same propeller shaft. They were installed on opposite sides of the crankshaft so that when one engine pulled, the other pushed.

See also steam propulsion.

See also steam propulsion.

Subjects: Maritime History.

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