Abstract: A floating breakwater structure that can be positioned adjacent to a boat dock or other area to be shielded from the effect of waves, the structure having a framework supported by floating members to maintain the framework above the water's surface and a plurality of adjacently positioned weighted rectangular concrete slabs pendulously supported into the water from the framework at least along one side of the structure, the concrete slabs being from about 8 to 12 feet in length, from 3 to 6 feet wide and 3 to 8 inches thick.