Notice Not affiliated with the Master Mariners Benevolent Association (MMBA) or any successor organization. v.2026.05
General Overview
Facility 🛶 Boat Ramp Water River Est. Parking ~40 spaces Lot Size Medium (50–150) Lot Type Surface Boat Ramp Visible Confidence High

Small boat ramp facility on a river with a concrete ramp, adjacent pier, and a medium-sized unpaved parking lot containing several vehicles.

Aerial view of United States Naval Submarine Base New London / Groton
Atlantic Coast

United States Naval Submarine Base New London / Groton

Groton, CT

The United States Naval Submarine Base New London, commonly known as the Submarine Base Groton, is situated in Groton, Connecticut, along the Thames River estuary, which flows into Long Island Sound on the Atlantic Coast. This facility serves as a primary base for U.S. Navy submarines, supporting military operations, training, and maintenance rather than recreational sailing or boating. Its strategic location in southeastern Connecticut enhances its role in coastal defense and submarine activities along the eastern seaboard.

Location Groton, Southeastern Connecticut Planning Region, Connecticut
Coordinates 41.3888, -72.0887

Nearby Marinas in Connecticut

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.