Notice Not affiliated with the Master Mariners Benevolent Association (MMBA) or any successor organization. v.2026.05
General Overview
Facility 🚤 Full Service Marina Est. Slips ~40 Water Ocean/Bay Est. Parking ~60 spaces Lot Size Medium (50–150) Lot Type Surface (Striped) Access Entry/Exit Lanes Confidence High

Medium-sized marina with multiple parallel docks accommodating around 40 boats, adjacent to a striped surface parking lot with about 60 spaces and several parked vehicles along a road.

Aerial view of Agat Small Boat Harbor
inland waterway

Agat Small Boat Harbor

GU

Agat Small Boat Harbor is situated in the village of Agat on the southwestern coast of Guam, an unincorporated U.S. territory in the western Pacific Ocean, where it provides access to sheltered coastal waters often referred to as an inland waterway due to the island's geography. This marina primarily serves small-scale recreational boating and fishing activities, catering to local enthusiasts navigating the calm bays and nearby Philippine Sea. Its location in this tropical Pacific region makes it a hub for those exploring Guam's coastal environment.

Address Agat Marina, Hågat, Guam
Capacity ~40 slips
Coordinates 13.3686, 144.6504

Nearby Marinas in Guam

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.