A staysail ketch is a type of sailboat that has two masts: a mainmast and a mizzenmast. The mizzenmast on a ketch is located forward of the rudder-post, which distinguishes it from a yawl. A staysail ketch also has a staysail, which is mounted on the inner forestay and creates a slot between the headsail and the mainsail to provide extra lift. This makes it a cutter-rigged ketch.
Some advantages of a staysail ketch are that it has smaller sails that are easier to handle for short-handed or older sailors, it has more sail plan options for different wind conditions, and it can sail well without the mainsail by using the foresail and the mizzen sail.