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 Canal Est. Parking ~60 spaces Lot Size Medium (50–150) Lot Type Surface Confidence High

Medium-sized marina with multiple docks accommodating around 40 boats along a canal, featuring a medium surface parking lot with several visible vehicles and adjacent buildings.

Aerial view of Sumay Cove Marina
inland waterway

Sumay Cove Marina

Sånta Rita-Sumai Municipality, GU

Sumay Cove Marina is situated in the Sånta Rita-Sumai Municipality on the western coast of Guam, within the sheltered inland waterway of Apra Harbor, a natural deep-water bay that offers protection from the Pacific Ocean's swells. This marina primarily serves recreational boating and sailing enthusiasts, providing access to the calm, navigable waters ideal for local exploration and leisure activities in this tropical Micronesian region.

Address CMQ3+CH4, Apra Harbor, 96915, Guam
Capacity ~40 slips
Hours
Monday: 8:30 AM – 5:30 PM
Tuesday: 8:30 AM – 5:30 PM
Wednesday: Closed
Thursday: 8:30 AM – 5:30 PM
Friday: 8:30 AM – 5:30 PM
Saturday: 8:30 AM – 5:30 PM
Sunday: 8:30 AM – 5:30 PM
Coordinates 13.4391, 144.6555

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.