A trimaran having a hull and outrigger pontoons on each side of the hull. The
pontoon
are laterally movable away and towards the hull. Each of the pontoons are secured
to the hull by forward and aft link boxes. The link boxes are pivotally mounted
to the port side and starboard side of the hull. Each of the link boxes are also
pivotally secured to a pontoon. The forward and aft link boxes of each side are
connected together by a linkage whereby the forward port side and starboard link
boxes are arcuately rotated when the aft port side and starboard link boxes are
arcuately rotated.