Ketch Barrymore. In the film, the boat was named the "Sea Serpent". Ketch A ketch is a two-masted sailing craft whose mainmast is taller than the mizzen mast (or aft-mast). The name "ketch" is derived from "catch" or fishing boat. Historically the ketch was a northern European square-rigged vessel, often a freighter or fishing boat, particularly in the Baltic and North seas. Nowadays, a ketch tends to be a fore-and-aft rigged pleasure yacht, similar to a yawl; but a ketch's mizzen mast is taller and its mizzen sail is larger than a yawl's. The large fore-and-aft sail on the mainmast is
Ketch than the Bermuda rig. In strong winds a ketch's mainsail can be dropped altogether (rather being reefed), thereby reducing sail and leaving a balanced sail-plan with just jib and mizzen set. When sailing with just mizzen and jib set, there is no excessive lee helm, and some claim that the additional sail allows a better balance; and in an emergency the ketch may be steered without use of the rudder. When running before the wind or reaching across the wind, a ketch may set extra sails such as a spinnaker or mizzen staysail on the mizzen mast, as well as