Ketch Cousin is a type of sailing vessel, specifically a two-masted fore-and-aft rigged boat with a mizzen mast stepped forward of the rudder post. The term 'Ketch Cousin' is derived from the Dutch word 'Ketches', which means 'small ship'. The YAWL is a similar type of vessel, but with a mizzen mast stepped aft of the rudder post. Both types of vessels are used for recreational sailing and racing.