This empty portion of the wave attenuator system that works with the FC-WAFULL to provide wave buffering. It is designed to attach via the flanges to the underside of the FC-WAFULL. They can be stacked up to 3 floats deep under a dock to provide a total of 5' (20" x 3) of depth below your dock in to the water. The empty cells have holes that allow water to pass through the shells, but buffer wave action in the process.
The bouyancy is NONE and the ship weight is 50lbs.