Tanja sail or tanja rig is a type of sail commonly used by the Austronesian people, particularly in Maritime Southeast Asia. It is also known as the tilted square sail, canted rectangular sail, rectangular balance lug, or balance lug sail in English. In historical sources, tanja sail is sometimes incorrectly referred to as lateen sail or simply square sail.
A lanong with three tanja sails of the Iranun people of the Philippines
the "Luf Boat", a Micronesian catamaran with tanja sails in the Humboldt Forum, obtained in 1903 from Luf Island, Hermit Islands, Bismarck Archipelago
Samudra Raksa running before the wind, with "goosewing" sail configuration (receiving wind from aft).
One of the ships in Borobudur depicting a double-outrigger vessel with tanja sails in bas-relief (c. 8th–9th century)
The lug sail, or lugsail, is a fore-and-aft, four-cornered sail that is suspended from a spar, called a yard. When raised, the sail area overlaps the mast. For "standing lug" rigs, the sail may remain on the same side of the mast on both the port and starboard tacks. For "dipping lug" rigs, the sail is lowered partially or totally to be brought around to the leeward side of the mast in order to optimize the efficiency of the sail on both tacks.
A replica of a longboat from the French frigate La Résolue The original was captured in 1786 in Bantry and is now in the National Museum of Ireland. Such replicas are referred to as a Yole de Bantry.
