Outermost Harbor Marine has been serving boaters since the 1950’s in Chatham, Massachusetts. Voted “THE BEST MARINA IN CHATHAM”, we have a friendly, knowledgeable staff, USCG Captains, the most beautiful views on Cape Cod and a 33’ Grady-White available for charter.

We offer a Yamaha Outboard Dealership with Certified Master Technicians. The OHM service team is comprised of experts in all aspects of boat repair and maintenance with an expansive parts department.

Our modern, newly constructed docks offer seasonal and transient slips which include fresh water, a fueling station and 30-amp electricity. Don’t own a boat? We offer special services that include bird/wildlife tours, water shuttles to the beaches on Monomoy Island, and rentals of Kayaks or Paddleboards.


Outermost Harbor Marine
83 Seagull Rd, Chatham, MA 02633
(508) 945-2030

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