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SF Marina completes Hyannis Yacht Club floating concrete interior docks

by Martin Flory Group 1 Aug 2020 08:16 PDT

A series of storms prompted the Hyannis Yacht Club in Hyannis, Massachusetts, to rebuild its T-head attenuator system and dock walkway array. Having completed the breakwater replacement years earlier, SF Marina recently finalized phase two of the project. With tight timing, it delivered floating concrete interior docks in time to not disrupt club programs and members' launch festivities.

The new 41m x 3m W breakwater is built using three of SF Marina's renowned SF300 floating concrete pontoons held in place with nine steel piles with center guides. Protecting the inner marina from the area's rough wave action, its unique design absorbs and distributes the stress loads placed on it during violent weather.

In 2017, a nor'easter heavily impacted Hyannis. The new SF Marina breakwater held back the violent wind and waves and was completely undamaged. The aged, wooden interior docks, however, finally succumbed to Lewis Bay's notoriously rough weather.

"Due to heavy icing in the area, we used to store our attenuator in a lagoon all winter," said Randall Wallin, Hyannis Yacht Club vice commodore. "Now, we just leave it out year-round. Bar none, the new breakwater performed better than expectations."

In Phase II, the Hyannis Yacht Club replaced its 65m dock array with a state-of-the-art SF Marina solution. Each SF1024 floating concrete dock segment is fitted with HD guides to accommodate the new steel piles. Combined with a low center of gravity, the structure is highly stable. Stainless steel tracks were incorporated to accommodate the timber fingers for its 36 slips.

"I must say, kudos to Mason Sears from SF Marina," added Wallin. "He's been so responsive that I can't say enough about him. People ask me about the dock and I tell them, 'If you work with Mason, you can't get better.'" Sears is the VP of sales, marketing and project management.

Since 1939, the Hyannis Yacht Club has built a rich and enduring legacy as Cape Cod's preeminent sailing venue. The private club offers its members a wide range of boating, swimming and dining activities. Its website is www.hyannisyachtclub.org.

Gothenburg, Sweden-based SF Marina engineers and manufactures floating breakwaters and concrete dock pontoons, and related marine structures that are built to withstand extreme weather events. Through a robust network of international offices, it has completed recreational and commercial projects around the globe.

For more information contact SF Marina, Tel: +46-31-779-07-90. Email: or visit www.sfmarina.com.

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