an extension to the keel of a vessel either for protecting the keel from damage or for reducing leeway
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
How to use false keel in a sentence
When it was finished a false keel six inches in depth in the centre, tapering away to nothing at the ends, was fixed underneath.Condemned as a Nihilist | George Alfred Henty
The light of the moon showed the sheathing boards of the ship floating all round, and at last her false keel.
The sheathing from the bow on that side was torn off, and a great part of the false keel was gone.Captain Cook | W.H.G. Kingston
It was afterwards found that a great part of the gripe and false keel were knocked away.
Columbus refitted her, put on a false keel, furnished her with a mast and sail.The Life of Christopher Columbus from his own Letters and Journals | Edward Everett Hale