Abstract

The technical aspects of a new floating breakwater concept installed at the Port of Brownsville Marina, located in Port Orchard Bay, Washington, are described in this paper. The breakwater incorporates submerged porous treated timber installed on either side of the concrete pontoons to reduce wave transmission. Discussed are the 8 concrete pontoon units that are connected to each other by a patented rubber cushion shear tube and bolt assembly on each side, and are held in place with steel anchor piles. A numerical model developed to study floating breakwaters equipped with pairs of wave fences of different porosity; a structural model used to compute the design force envelopes for the concrete floats; and a physical model test to study the performance of the breakwater under the action of oblique waves are described.

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