Trimaran Trimaran A trimaran (or double-outrigger) is a multihull boat that comprises a main hull and two smaller outrigger hulls (or "floats") which are attached to the main hull with lateral beams. Most trimarans are sailing yachts designed for recreation or racing; others are ferries or warships. The word "trimaran" is a portmanteau of "Tri" and "(Cata)maran". It is thought to have been invented by Victor Tchetchet, a pioneering, Ukrainian-born modern multihull designer. The first trimarans were developed by the Austronesian people and are still widely used today by traditional fishermen in maritime Southeast Asia, Madagascar, Micronesia, and Polynesia. Some of
Junk rig gaff rigged 4-corner sail. Knowing the names of the sides and corners help understand the running rigging and sail trim of the modern junk sail. The 4 corners of the junk sail are: The 4 sides of the junk sail are: The running rigging for the modern junk rig can be divided into two groups—the "pull ups" and the "pull downs." This is important because the action of hauling one line in a group will be resisted by the opposite group. For example, when raising the sail via the halyard, the pull-downs must be uncleated and free to run. The