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.
Trimaran feat, Francis Joyon held the world record for solo circumnavigation of the world, set on January 20, 2008. The 51-year-old Frenchman circled the planet alone in 57 days, 13 hours, 34 minutes, 6 seconds in a trimaran. He beat British sailor Ellen MacArthur's record set in February 2005 for which she spent just over 71 days at sea. Francis Joyon and crew of five sailors; Dec 2016–Jan 2017; the Maxi trimaran "IDEC SPORT"; current absolute (wind or mechanically powered) fastest maritime circumnavigation, in 40 days 23 hours 30 minutes 30 seconds of sailing. Average speed of 26.85 knots (30.71 MPH),