Bitts
Bitts are paired vertical wooden or metal posts mounted either aboard a ship or on a wharf, pier or quay. The posts are used to secure mooring lines, ropes, hawsers, or cables.[1] Bitts aboard wooden sailing ships (sometime called cable-bitts) were large vertical timbers mortised into the keel and used as the anchor cable attachment point.[2] Bitts are carefully manufactured and maintained to avoid any sharp edges which might chafe and weaken the mooring lines.[3]
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Use
Mooring lines may be laid around the bitts either singly or in a figure-8 pattern with the friction against tension increasing with each successive turn. As a verb bitt means to take another turn increasing the friction to slow or adjust a mooring ship's relative movement.[1]
Mooring fixtures of similar purpose:
References
- Knight, Austin M. (1937). Modern Seamanship (Tenth ed.). New York: D. Van Nostrand Company. p. 783.
- Keegan, John (1989). The Price of Admiralty. New York: Viking. p. 276. ISBN 0-670-81416-4.
- Manning, George Charles (1930). Manual of Naval Architecture. New York: D. Van Nostrand Company. p. 158.
- Knight, p.788
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