garboard

from WordNet (r) 3.0 (2006)

garboard
    n 1: the first wale laid next to the keel of a wooden ship [syn:
         {garboard}, {garboard plank}, {garboard strake}]

from The Collaborative International Dictionary of English v.0.48

Garboard \Gar"board\, n. (Naut.)
   One of the planks next the keel on the outside, which form a
   garboard strake.
   [1913 Webster]

   {Garboard strake} or {Garboard streak}, the first range or
      strake of planks laid on a ship's bottom next the keel.
      --Totten.
      [1913 Webster]