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 Ocean/Bay Confidence High

Small marina dock with several boats moored along a residential waterfront with no dedicated parking lot visible.

Aerial view of Seymour's Boatyard
Atlantic Coast

Seymour's Boatyard

Village of Northport, NY

Seymour's Boatyard is located in the Village of Northport on the North Shore of Long Island, New York, where it sits along the shores of the Long Island Sound, a sheltered estuary connected to the Atlantic Ocean. This marina serves recreational boating and sailing activities in the region, taking advantage of the calm waters ideal for day trips and local excursions. As part of the Atlantic Coast's suburban Long Island area, it caters to boaters exploring the scenic bays and nearby islands of the Sound.

Location Village of Northport, Suffolk County, New York
Capacity ~15 slips
Coordinates 40.9018, -73.3534

Nearby Marinas in New York

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.