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.
Vessel
O3
MMSI 538072318 · Call sign V7A7010
Not yet on Master's MateFlag
MHLLength
109 m
Beam
18 m
Draft
4.3 m
Call sign
V7A7010
IMO
9865738
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
85
Registered in the Marshall Islands, O3 is a 109-metre vessel. Below, she has a 18-metre beam and a draft measuring 4.3 metres. She's on record as MMSI 538072318, call sign V7A7010, IMO 9865738. Put O3 on the Master's Mate Safety Initiative Network — free to claim, with a whole fleet watching out for her.
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Is O3 your boat?
Your free claim unlocks the most powerful cruising platform ever built — anchor watch, worldwide charts, live AIS, weather routing, and a network of cruisers watching each other’s backs.
Claim this boat — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Live AIS position · Jun 9, 2026 07:32 UTC
Position
54.8924° N, 9.7729° E
Status
At anchor
Speed
0.4 kn
Course
6°
Crossing the Baltic Sea? You're never out there alone.
Thousands of cruisers on the Master's Mate Network — ready to help the moment something goes wrong.
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The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put O3 on the map. It hands you the full bridge:
Anchor Watch
GPS-precise drag alarms that actually wake you — and your whole crew. Sleep through the night.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
Live AIS & Traffic
See every vessel around you in real time. Closest-approach warnings before they matter.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Onboard Cameras
Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.
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.
Hail Any Captain
A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.
Claim O3 and switch it all on
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About O3
What kind of vessel is O3?
O3 is a vessel flagged to Marshall Islands.
Where was O3 last seen?
O3 was last reported in the Baltic Sea in Jun 2026 on public AIS.
What is O3's MMSI?
O3's MMSI is 538072318. Call sign V7A7010. IMO 9865738.
How big is O3?
O3 is about 109 m long, 18 m on the beam, drawing 4.3 m.
Is O3 on the Master's Mate Safety Initiative Network?
Not yet. If O3 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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