
• A projection downward from the keel of a yacht, resembling in shape the fin of a fish, though often with a cigar-shaped bulb of lead at the bottom, and generally made of metal. Its use is to ballast the boat and also to enable her to sail close to the wind and to make the least possible leeway by offering great resistance to lateral motio......
Found on
http://thinkexist.com/dictionary/meaning/fin_keel/

(from the article `keel`) ...prevent sideslip. A `skeg` is an aftward extension of the keel intended to keep the boat moving straight and to protect the propeller and rudder ...
Found on
http://www.britannica.com/eb/a-z/f/25

A narrow, deep, fixed keel.
Found on
http://www.diy-wood-boat.com/Boating-terms.html
Fin keel (Nautical) A projection downward from the keel of a yacht, resembling in shape the fin of a fish, though often with a cigar-shaped bulb of lead at the bottom, and generally made of metal. Its use is to ballast the boat and also to enable her to sail close to the wind and to make the least possible leeway by offerin...
Found on
http://www.encyclo.co.uk/webster/F/30

[
n] - a metal plate projecting from the keel of a shallow vessel to give it greater lateral stability
Found on
http://www.webdictionary.co.uk/definition.php?query=fin%20keel
noun a metal plate projecting from the keel of a shallow vessel to give it greater lateral stability
Found on
https://www.encyclo.co.uk/local/20974

a finlike projection extending downward from the keel of a sailboat, serving to prevent lateral motion and acting as additional ballast.
Found on
https://www.infoplease.com/dictionary/fin-keel
No exact match found.