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 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