A variant of BILGE.

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1627.  Capt. Smith, Seaman’s Gram., ii. 4. A ships Billage is the breadth of the floore when she doth lie aground.

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1708.  J. Harris, Lexicon Techn., Bildge, of a Ship, is the bottom of her Floor … and Billage is the breadth of her Floor when she lies aground.

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