catboat

from WordNet (r) 3.0 (2006)

catboat
    n 1: a sailboat with a single mast set far forward

from The Collaborative International Dictionary of English v.0.48

Catboat \Cat"boat`\, n. (Naut.)
   A small sailboat, with a single mast placed as far forward as
   possible, carring a sail extended by a gaff and long boom.
   See Illustration in Appendix.
   [1913 Webster]