Abstract: A flotation device is disclosed having first and second spaced-apart, elongated, substantially rigid structural members and a plurality of buoyancy tubes held in compression between the first and second structural members. The compression connection between the ends of the buoyancy tubes and the sides of the structural members in this configuration can improve the structural integrity of the flotation device. The structural members can be made of glue-laminated timber, which has high strength and stability. The buoyancy tubes can be made of high-density polyethylene. A deck structure can be supported on top of the first and second structural members. Thus, thermal welding of the deck structure to the buoyancy tubes typically can be avoided. A flotation assembly also is disclosed including two flotation devices connected by a flexible hinge assembly.

Abstract: The present disclosure concerns embodiments of a wave-attenuating system. According to one aspect, the wave-attenuating system includes a flexible, resilient barrier member that is disposed in a body of water and oriented to interrupt and dissipate the wave action of oncoming waves. The barrier member desirably is constructed from a substantially neutrally or slightly negatively buoyant material so that the overall depth, length, and/or thickness can be increased as needed for a particular application while adding little deadweight to the system in water. The barrier member can be supported by a flotation device in a floating breakwater, or alternatively, the barrier member can be secured to a stationary structure in a fixed breakwater.