Get the MarineRadar appSatellite AISSatellite live trackingTrack any shipLive alerts112,000+ ships trackedDownload free

Port of Johnston Atoll

UMJON🇺🇲United States Minor Outlying Islands

About Port of Johnston Atoll

Johnston Atoll is a remote U.S. military installation in the Pacific Ocean. It has served as a naval base and a site for missile defense testing. The atoll's facilities are primarily for military support and research.

Identification

UN/LOCODE
UMJON
Country
🇺🇲United States Minor Outlying Islands
Time Zone
UTC+12

Region

Subdivision
UM-67

Classification

Type
Port
Live tracking · 50,000+ mariners

Track ships at the Port of Johnston Atoll in real time

Live AIS positions, arrivals, and departures at UMJON — straight from your phone.

Live AIS positionsArrival alertsVoyage history
Get the App

Frequently Asked Questions

How do I track vessels arriving at or departing from the Port of Johnston Atoll?+
You can track vessels near Johnston Atoll (UMJON) 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 UMJON on the live map.
What are the operating hours and time zone for the Port of Johnston Atoll?+
The Port of Johnston Atoll operates in the UTC+12 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.