Welcome to Harbor One Marina

In 2022, Harbor One Marina & Portland Boat Works were purchased by the Cusson family and are now affiliated with Atlantic Outboard and Westbrook Marine Center.

Our peaceful setting at the mouth of the Connecticut River offers an exceptional view of Long Island Sound, and our location immediately inside the Old Saybrook, CT breakwater and Bell 8 offers quick access to the River as well as the Sound.

We take pride in our excellent customer service and look forward to providing a relaxing experience whether seasonal or transient. Over the years, Harbor One has made continuous enhancements to its beautiful and tranquil facility, enlarging capacity and installing 24 hour surveillance cameras for your security. The marina accommodates boats up to 150 ft in length and the newly renovated dock house located on the main dock, sells both gasoline and diesel fuel, ice and offers basic boating supplies.

Additional Locations

Atlantic Outboard, Westbrook

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Portland Boat Works & Yacht Sales, Portland

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