{"@context":"https://schema.org","@type":"Place","additionalType":"https://schema.org/Port","name":"Mare Island","identifier":"US MI8","unlocode":"US MI8","city":null,"country":"United States","waterBody":"North Pacific Ocean","harborSize":"Small","harborType":"Coastal (Natural)","channelDepthMeters":7.9,"confidenceLevel":null,"coordinates":{"latitude":38.1,"longitude":-122.266667},"description":"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. Sheltere","url":"https://www.freight-academy.com/en/information/seaports/mare-island-port-us-mi8","markdownMirror":"https://www.freight-academy.com/api/md/seaports/en/mare-island-port-us-mi8","source":null,"provider":{"@type":"Organization","name":"Freight Academy","url":"https://www.freight-academy.com"},"quickSummary":"Mare Island · (UN/LOCODE: US MI8) · United States · Small · 7.9 m"}