chess-tree

The Sailor's Word-Book

A piece of oak fastened with iron bolts on each top-side of the ship. Used for boarding the main-tack to, or hauling home the clues of the main-sail, for which purpose there is a hole in the upper part, through which the tack passes, that extends the clue of the sail to windward. Where chain has been substituted of late for rope, iron plates with thimble-eyes are used for chess-trees.

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