Port of Mare Island

The approach to Mare Island is supported by 5 navigation aids within 50 nautical miles. The nearest is Carquinez Strait Lighthouse at 1.7 NM to the E. Other aids include East Brother Island (10.7 NM SW), Southampton Shoal (13.2 NM SSW), Point Blunt (15.1 NM SSW), Marin County Lighthouses (15.2 NM SSW). Mariners should consult the relevant chart and List of Lights for full approach details.

The Port of Mare Island is located within the US West Coast shipping lane — a major trans-Pacific trade route serving West Coast ports of the United States. This strategic position influences vessel traffic density, anchorage availability, and port scheduling.

You can track vessels near Mare Island (USMI8) in real time using MarineRadar. The platform displays live AIS positions of nearby ships, including vessel name, type, flag, speed, and course. Use the "Track Vessels Nearby" button on this page or search for USMI8 on the live map.

The Port of Mare Island operates in the UTC-7 time zone. Operating hours, VTS schedules, and pilot availability vary — vessel agents should confirm with the port authority in advance, especially for night arrivals or weekend operations.