GARBOARD
garboard, garboard plank, garboard strake
(noun) the first wale laid next to the keel of a wooden ship
Source: WordNet® 3.1
Etymology
Noun
garboard (plural garboards)
(nautical) The board on a boat which attaches to the keel running fore and aft along the bottom.
Source: Wiktionary
Gar"board, n. (Naut.)
Definition: One of the planks next the keel on the outside, which form a
garboard strake. Garboard strake or streak, the first range or strake
of planks laid on a ship's bottom next the keel. Totten.
Source: Webster’s Unabridged Dictionary 1913 Edition