The Collaborative International Dictionary of English v.0.48:

Kintlidge \Kint"lidge\, n. (Naut.)
   See Kentledge.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Kentledge \Kent"ledge\, n. [OF. cant edge, corner, D. kant. See
   Cant edge, angle.] (Naut.)
   Pigs of iron used for ballast. [Written also kintlidge.]
   [1913 Webster]

Bouvier's Law Dictionary, Revised 6th Ed (1856):

KINTLIDGE, merc. law. This term is used by merchants and seafaring men to
signify a ship's ballast. Mere. Dict.