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
A-ONE
MMSI 440103440 · Call sign 130064
Not yet on Master's MateType
Tanker
Flag
KORLength
59 m
Beam
10 m
Draft
4.1 m
Call sign
130064
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
85
A-ONE is a tank ship on the South Korea registry, measuring 59 metres. She's built with a 10-metre beam and a 4.1 m draft. Find her under MMSI 440103440, call sign 130064. Claim A-ONE free on the Master's Mate Safety Initiative Network and let nearby cruisers have her back.
Free forever · No credit card · for commercial operators
Eyes on A-ONE, 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
35.1212° N, 129.0506° E
Transiting the Sea of Japan? 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 A-ONE 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 A-ONE and switch it all on
Free to join · nothing to install to start · cancel anytime
About A-ONE
What kind of vessel is A-ONE?
A-ONE is a Tanker flagged to South Korea.
Where was A-ONE last seen?
A-ONE was last reported in the Sea of Japan in Jun 2026 on public AIS.
What is A-ONE's MMSI?
A-ONE's MMSI is 440103440. Call sign 130064.
How big is A-ONE?
A-ONE is about 59 m long, 10 m on the beam, drawing 4.1 m.
Is A-ONE on the Master's Mate Safety Initiative Network?
Not yet. If A-ONE is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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