luff tackle

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A purchase which has a single and a double block, the standing part of the rope being secured to the strop of the single block, and the hauling part coming from the double block. It increases the power by four times when rove to advantage. It was originally used for hauling down the tack of a sail in a fore-and-aft rig to make the luff taut, but the term is now used to describe any tackle rove through a single and a double block. Luff upon luff, one luff tackle hooked onto the fall of another in order to double the power.

Luff tackle rove to disadvantage

Subjects: Maritime History.

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