Art Anderson Associates provided comprehensive design and construction services for the expansion of the Port of Bremerton's marina on the Bremerton waterfront. The $34 million project expanded the marina by approximately 300 berths and incorporated an award-winning breakwater system. We provided full civil, structural, mechanical and electrical engineering design; landside and naval architecture; and bid/construction support services for of all elements of the project, including the marina floats, repositioning of the USS Turner Joy, passenger ferry terminal improvements and the primary element of the breakwater system, a state-of-the-art floating concrete structure that is approximately 8,000 long tons and over 1,400 feet in length.

The main breakwater consists of twelve precast bodies constructed of high-performance, lightweight concrete, independently post-tensioned and enabling rigid connections that allow the breakwater to behave as a single structure. The design was developed as a result of extensive physical and numerical modeling, and is protects against both wind and the long-period wake waves of passing ferry traffic. The project has already received accolades, in large part due to the accomplishments of the floating breakwater design. It won the 2007 Outstanding Civil Engineering Achievement Award from the American Society of Civil Engineers (ASCE) Seattle Section and ASCE Region 8, and is a nominee for the national Outstanding Civil Engineering Achievement Award.

The floating breakwater portion of the project, known as the "floating wave attenuator" was the subject of a paper and presentation at the ASCE's PORTS 2007 Conference, held in March of 2007.  The paper's authors included Rob Henry, PE; Willy Ahn, PhD, PE; Jim Garrison, PhD, PE; and Vlad Shepsis, PhD, PE.  Read the Paper (PDF).  View the Presentation (PDF).