Cutting-Edge Breakwater Protection in Quincy Bay

Part of greater Massachusetts Bay, Quincy Bay is just seven miles south of Boston and home to Safe Harbor Marina Bay. The full-service marina offers a unique, vibrant waterfront, access to world-class boating and, with its new state-of-the-art SF Marina floating concrete breakwater system, safe and peaceful dockage.
Marina Bay’s west basin had a long history of recurring damage from the local storm conditions. The SF Marina floating concrete breakwater array installed is engineered to overcome extreme weather events. It not only protects Marina Bay’s floating timber docks and fingers from the area’s numerous seasonal storms, but also reduces costly repairs.
Steel-reinforced and virtually unsinkable, each of the 14 Type-400 SF Marina pontoons used in the project has a buoyancy rating of approximately 102.4 psf, yet with their exceptional mass, the structures are exceptionally stable. An exclusive coupling system absorbs and distributes stress loads.

The Marina Bay project consists of an L-shaped 918’ L x 13’ W SF Marina breakwater on the west basin. Doubling as docking space for transient megayachts, it has electric and water supplies routed through integrated utility ducts. A second smaller section extends from the marina’s rubble mound breakwater to overlap the larger portion and protect the harbor mouth. Each of the 14 pontoons is secured with a pair of 30” steel piles.