Worm shoe

A worm shoe is a strip of wood such as oak or pine which is fixed to the keel of a wooden boat to protect it from shipworms. The wood is sacrificed to the worms while the main structure is kept separate and safe using a layer of tar paper or creosoted felt, which the worms will not penetrate.[1][2][3]

The hull of schooner Lettie G. Howard with its keel, false keel and worm shoe

References
  1. David MacLean (1977), Hauling Out and Winterizing, p. 99, ISBN 0830669442
  2. Wooden Hull, Salzwasser-Verlag, 2011, p. 30, ISBN 3861959291
  3. Roger C. Smith (2000), The Maritime Heritage of the Cayman Islands, p. 130, ISBN 0813017734
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