Port of Mare Island (USMI8): Details, Transit Times & Shipping Routes
Port of Mare Island (UN/LOCODE USMI8) is a small coastal (natural) harbor located in United States, on the North Pacific Ocean. It sits at 38.1000° N, 122.2667° W. The port reports a channel depth of about 7.9 m, an anchorage depth near 7.9 m, cargo pier depths around 7.9 m. Shelter afforded is rated excellent. Cargo handling includes wharves, anchorage facilities.
Port Specifications & Capabilities
Physical characteristics from the NGA World Port Index. Values of 0 in the source are shown as not reported.
Harbor Profile
- Harbor Type
- Coastal (Natural)
- Harbor Size
- Small
- Shelter Afforded
- Excellent
- World Water Body
- North Pacific Ocean
- Region
- United States W Coast
Services & Restrictions
Route Calculator & Transit Estimator
Great-circle distance — actual sea routes vary with canals, traffic lanes & weather.
nautical miles (direct)
@ 14 knots
B2B Freight Quote — Port of Mare Island
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Nearby Ports & Connections
Nearest Ports to Mare Island
Frequently Asked Questions about Port of Mare Island
Where is Port of Mare Island located?
Port of Mare Island is a seaport located in United States, on the North Pacific Ocean. Its coordinates are 38.1000° N, 122.2667° W.
What is the UN/LOCODE for Port of Mare Island?
The UN/LOCODE for Port of Mare Island is USMI8 — country code US, location code MI8.
How deep is Port of Mare Island?
Per the NGA World Port Index, Port of Mare Island has a channel depth of about 7.9 m, an anchorage depth of about 7.9 m, cargo pier depths of about 7.9 m.
Does Port of Mare Island require a pilot?
Yes — pilotage is compulsory at Port of Mare Island.
What type of harbor is Port of Mare Island?
Port of Mare Island is classified as a coastal (natural) harbor, of small size, offering excellent shelter.
What cargo facilities does Port of Mare Island have?
Port of Mare Island is recorded as offering wharves, anchorage facilities.
About this data
Specifications for Port of Mare Island are derived from the U.S. National Geospatial-Intelligence Agency (NGA) World Port Index (Pub 150, WPI #16410), a public-domain U.S. Government dataset. View the relevant Sailing Directions →