Abstract: An expandable and contractible safety barrier for a boat includes a first barrier portion and a second barrier portion. The first barrier portion includes a first outside hinge portion. The second barrier portion includes a second outside hinge portion. The first barrier portion is pivotally connected to the second barrier portion by a middle hinge. The middle hinge is locate on an end of the first barrier portion opposite the first outside hinge portion and on an end of the second barrier portion opposite the second outside hinge portion. A latching device that removably attaches the first barrier portion to a fixed barrier includes a pin about which the first outside hinge portion pivots.

Abstract: A pontoon boat includes two pontoons parallel to the bow to stern axis, and transverse beams which connect the pontoons. The pontoon boat has a width along the transverse beams which can vary from a contracted to an expanded state to allow for storage, and use, respectively.