Float (nautical) marine salvage, often deployed uninflated then pressurized to raise a sunken object. In popular usage, the term "pontoon" can refer to any of several of the following objects that make use of nautical floats. A pontoon boat is a flattish boat that relies on nautical floats for buoyancy. Common boat designs are a catamaran with two pontoons, or a trimaran with three. In many parts of the world, pontoon boats are used as small vehicle ferries to cross rivers and lakes. In Australia and New Zealand, the term "pontoon" often refers to an anchored raft-like platform used for diving from.
Junk rig running rigging which pulls up the junk sail are: The running rigging which pulls down on the junk sail are: The running rigging that sets or trims the junk sail (controls the angle of attack relative to the direction of the wind) is the "sheet". On a traditional Chinese junk rig, the sail is controlled by "sheetlets"—small sheet lines running from the battens to blocks that in turn are on lines running through a "euphroe," a long piece of wood with holes in it. This helps maintain uniform tension in each panel of the sail. Western ship designers Tom Colvin,