Mare Island is better understood as a ship-repair site than a cargo port, and even that role has narrowed sharply. Once a renowned US Navy shipyard near Vallejo, it was closed by the Navy in 1996 and revived from 2013 by Mare Island Dry Dock LLC for repairs and dockings – an operation that ceased on 1 January 2026 after the loss of a major US Coast Guard contract. The site offers no container or liner service; its value lay in repair work and a large graving dock rather than throughput. Sheltered on San Pablo Bay with around 7.9 m alongside, it connects to the Californian hinterland by road and rail. For containerised freight the nearby Port of Oakland is the obvious choice, while Benicia, Richmond and Stockton handle bulk, liquid and project cargo.

Frequently Asked Questions

What is the UN/LOCODE of Mare Island?▼

The UN/LOCODE of Mare Island is US MI8. This international code identifies ports and logistics locations worldwide.

Where is the port of Mare Island located?▼

The port of Mare Island is located in United States (North Pacific Ocean).

What is the size of the port Mare Island?▼

Mare Island is a Small harbor of type Coastal (Natural).

What is the channel depth of Mare Island?▼

The channel depth of Mare Island is 7.9 meters.

Location & Weather

38.10000, -122.26667

Channel depth: 7.9 m

Transit time routes from Mare Island

Los Angeles → Shanghai Los Angeles → Shenzhen Los Angeles → Guangzhou Los Angeles → Hong Kong Los Angeles → Tokyo Los Angeles → Busan

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The information on this page is based on publicly available transport and infrastructure data. The logistics significance of a location may change. All information without warranty.

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