A multihull is a boat or ship with more than one hull, whereas a vessel with a single hull is a monohull. The most common multihulls are catamarans, and trimarans. There are other types, with four or more hulls, but such examples are very rare and tend to be specialised for particular functions.
A catamaran is a watercraft with two parallel hulls of equal size. The distance between a catamaran's hulls imparts resistance to rolling and overturning. Catamarans typically have less hull volume, smaller displacement, and shallower draft (draught) than monohulls of comparable length. The two hulls combined also often have a smaller hydrodynamic resistance than comparable monohulls, requiring less propulsive power from either sails or motors. The catamaran's wider stance on the water can reduce both heeling and wave-induced motion, as compared with a monohull, and can give reduced wakes.
A trimaran is a multihull boat that comprises a main hull and two smaller outrigger hulls which are attached to the main hull with lateral beams. Most modern trimarans are sailing yachts designed for recreation or racing; others are ferries or warships. They originated from the traditional double-outrigger hulls of the Austronesian cultures of Maritime Southeast Asia; particularly in the Philippines and Eastern Indonesia, where it remains the dominant hull design of traditional fishing boats. Double-outriggers are derived from the older catamaran and single-outrigger boat designs.
Outrigger boats are various watercraft featuring one or more lateral support floats known as outriggers, which are fastened to one or both sides of the main hull. They can range from small dugout canoes to large plank-built vessels. Outrigger boats can also vary in their configuration, from the ancestral double-hull configuration (catamarans), to single-outrigger vessels prevalent in the Pacific Islands and Madagascar, to the double-outrigger vessels (trimarans) prevalent in Island Southeast Asia. They are traditionally fitted with Austronesian sails, like the crab claw sails and tanja sails, but in modern times are often fitted with petrol engines.
Proas are various types of multi-hull outrigger sailboats of the Austronesian peoples. The terms were used for native Austronesian ships in European records during the Colonial era indiscriminately, and thus can confusingly refer to the double-ended single-outrigger boats of Oceania, the double-outrigger boats of Island Southeast Asia, and sometimes ships with no outriggers or sails at all.
Waka are Māori watercraft, usually canoes ranging in size from small, unornamented canoes used for fishing and river travel to large, decorated war canoes up to 40 metres (130 ft) long.
Canoe sailing refers to the practice of fitting an Austronesian outrigger or Western canoe with sails.
A jukung or kano, also known as cadik is a small wooden Indonesian outrigger canoe. It is a traditional fishing boat, but newer uses include "Jukung Dives", using the boat as a vehicle for small groups of SCUBA divers.
The vinta is a traditional outrigger boat from the Philippine island of Mindanao. The boats are made by Sama-Bajau, Tausug and Yakan peoples living in the Sulu Archipelago, Zamboanga peninsula, and southern Mindanao. Vinta are characterized by their colorful rectangular lug sails (bukay) and bifurcated prows and sterns, which resemble the gaping mouth of a crocodile. Vinta are used as fishing vessels, cargo ships, and houseboats. Smaller undecorated versions of the vinta used for fishing are known as tondaan.
Paraw are various double outrigger sail boats in the Philippines. It is a general term and thus can refer to a range of ship types, from small fishing canoes to large merchant lashed-lug plank boats with two outriggers (katig) propelled by sails
A balangay, or barangay, is a type of lashed-lug boat built by joining planks edge-to-edge using pins, dowels, and fiber lashings. They are found throughout the Philippines and were used largely as trading ships up until the colonial era. The oldest known balangay are the Butuan boats, which have been carbon-dated to 320 AD and were recovered from several sites in Butuan, Agusan del Norte.
Wa are traditional sailing outrigger canoes of the Caroline Islands, Palau, and Yap. They have a single outrigger. They are similar to the sakman of the Northern Marianas.
Lakana, also known as la'kana or laka, are traditional outrigger canoes of the Malagasy people of Madagascar. It is a single-outrigger canoe with a dugout main hull.
Lepa, also known as lipa or lepa-lepa, are indigenous ships of the Sama-Bajau people in Indonesia, the Philippines, and Malaysia. They were traditionally used as houseboats by the seagoing Sama Dilaut. Since most Sama have abandoned exclusive sea-living, modern lepa are instead used as fishing boats and cargo vessels.
Bangka are various native watercraft of the Philippines. It originally referred to small double-outrigger dugout canoes used in rivers and shallow coastal waters, but since the 18th century, it has expanded to include larger lashed-lug ships, with or without outriggers. Though the term used is the same throughout the Philippines, "bangka" can refer to a very diverse range of boats specific to different regions. Bangka was also spelled as banca, panca, or panga in Spanish. It is also known archaically as sakayan.
Sakman, better known in western sources as flying proas, are traditional sailing outrigger boats of the Chamorro people of the Northern Marianas. They are characterized by a single outrigger and a crab claw sail. They are the largest native sailing ships (ladjak) of the Chamorro people. Followed by the slightly smaller lelek and the medium-sized duding. They are similar to other traditional sailing ships of Micronesia, like the wa, baurua, and the walap. These ships were once used for trade and transportation between islands.
Djenging is a type of large double-outrigger plank boat built by the Sama-Bajau people of the Philippines. It is typically used as a houseboat, though it can be converted to a sailing ship. It was the original type of houseboat used by the Sama-Bajau before it was largely replaced by the lepa after World War II. Larger versions of djenging were also known as balutu or kubu, often elaborately carved with bifurcated extensions on the prow and stern.
Junkung, also spelled jungkung or jungkong, is a small wooden sail to motorized boat used by Tausug, Sama-Bajau, and Yakan people of the Philippines. It is a fast cargo ship and is commonly used as a smuggling vessel in the maritime borders of the Philippines, Sabah, Malaysia and Eastern Indonesia. They are also sometimes used by pirates and Abu Sayyaf terrorists in and around the Sulu Sea.
Londe or londi is a traditional boat from North Sulawesi, Indonesia. They are thought to have existed since 1500s, developed from ancient Sangir islands boat called bininta which is now enshrined in the symbol of the region of Sangir Islands District.
Austronesian vessels are the traditional seafaring vessels of the Austronesian peoples of Taiwan, Maritime Southeast Asia, Micronesia, coastal New Guinea, Island Melanesia, Polynesia, and Madagascar. They also include indigenous ethnic minorities in Vietnam, Cambodia, Myanmar, Thailand, Hainan, the Comoros, and the Torres Strait Islands.
