Notice Not affiliated with the Master Mariners Benevolent Association (MMBA) or any successor organization. v.2026.05
General Overview
Facility 🛶 Small Dock Est. Slips ~15 Water River Confidence High

Small private dock area with several piers adjacent to clustered waterfront buildings and no visible parking lot.

Aerial view of Outermost Harbor Marine
Atlantic Coast

Outermost Harbor Marine

Chatham, MA

Full-Service Marina in Chatham, MA offering boat service & repair, maintenance & storage with Yamaha & Mercury certified technicians, plus tours, charters, and new/used boat sales.

★★★★★ 4.6 (56 reviews on Google) View on Google Maps ↗
Address 83 Seagull Rd, Chatham, MA 02633, USA
Capacity ~15 slips
Hours
Monday: 8:00 AM – 4:30 PM
Tuesday: 8:00 AM – 4:30 PM
Wednesday: 8:00 AM – 4:30 PM
Thursday: 8:00 AM – 4:30 PM
Friday: 8:00 AM – 4:30 PM
Saturday: Closed
Sunday: Closed
Coordinates 41.6650, -69.9557

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Marina Parking & Access Control

Marinas typically need to separate slip holder parking from day-visitor parking, trailer areas, launch ramps, and secure dock access points. Modern facilities use barrier gate systems to enforce these zones automatically — allowing permitted vehicles through via transponder or keycard while logging all access events.