Most of the sailboats seen in major international sailing competitions are of single-body structure, but occasionally catamarans and even trimarans are seen. This standard for

keel sailboat and steady board sailboat Keel Boat is also known as a heavy sailing boat, generally refers to a sailing boat with ballast keel.

Sailing yachts are boats powered by sails. Some modern sailing boats are also equipped with auxiliary mechanical power to improve the maneuverability and safety of

Kayak is divided into two items: kayak and rowing boat. From the time when humans mastered fire and stone axes, kayaks appeared, originally made of