Master's MateSafety Initiative Network
The Master's Mate Safety Initiative Network (MMSIn) — like AAA for the ocean, but free & community-driven. Cruisers keeping each other safe: anchor-drag & distress alerts, a verified captains directory, and a watch network that has your back.
Tanker
OVERSEAS BOSTON
MMSI 338221000 · Call sign WJBU
Not yet on Master's MateType
Tanker
Flag
USALength
183 m
Beam
32 m
Draft
8.5 m
Call sign
WJBU
IMO
9353565
Official No.
643249
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
89
An American tank vessel, OVERSEAS BOSTON measures 183 metres. Her hull carries a 32-metre beam and a draft of 8.5 m. She broadcasts as MMSI 338221000, call sign WJBU, IMO 9353565. Sign OVERSEAS BOSTON up free to the Master's Mate Safety Initiative Network and join a fleet that looks after its own.
Free forever · No credit card · for commercial operators
Eyes on OVERSEAS BOSTON, around the clock.
Real-time AIS, full systems telemetry, distress alerting and worldwide charts — your hull on one dashboard, from anywhere.
Put her on the dashboard — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Last known position · Jun 4, 2026
Position
46.4603° N, 124.6375° W
Wherever OVERSEAS BOSTON roams, you're never out there alone.
Thousands of cruisers on the Master's Mate Network — ready to help the moment something goes wrong.
Free with your claim · for commercial operators
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put OVERSEAS BOSTON on the map. It hands you the full bridge:
Live AIS & Traffic
See every vessel around you in real time. Closest-approach warnings before they matter.
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Anchor Watch
GPS-precise drag alarms that actually wake you — and your whole crew. Sleep through the night.
Onboard Cameras
Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.
Hail Any Captain
A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.
Claim OVERSEAS BOSTON and switch it all on
Free to join · nothing to install to start · cancel anytime
About OVERSEAS BOSTON
What kind of vessel is OVERSEAS BOSTON?
OVERSEAS BOSTON is a Tanker flagged to United States of America.
Where was OVERSEAS BOSTON last seen?
OVERSEAS BOSTON was last reported in around 46°N 125°W in Jun 2026 on public AIS.
What is OVERSEAS BOSTON's MMSI?
OVERSEAS BOSTON's MMSI is 338221000. Call sign WJBU. IMO 9353565.
How big is OVERSEAS BOSTON?
OVERSEAS BOSTON is about 183 m long, 32 m on the beam, drawing 8.5 m.
Is OVERSEAS BOSTON on the Master's Mate Safety Initiative Network?
Not yet. If OVERSEAS BOSTON is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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