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
ALCYONE
MMSI 228423800 · Call sign FMSF
Not yet on Master's MateType
Tanker
Flag
FRALength
183 m
Beam
32 m
Draft
8.5 m
Call sign
FMSF
IMO
9929819
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
27
ALCYONE is a tank vessel under the French flag, 183 metres overall. ALCYONE has a 32-metre beam and a 8.5-metre draft. Find her under MMSI 228423800, call sign FMSF, IMO 9929819. Claim ALCYONE 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 ALCYONE, 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
35.3050° N, 129.4425° 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.
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The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put ALCYONE 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 ALCYONE and switch it all on
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About ALCYONE
What kind of vessel is ALCYONE?
ALCYONE is a Tanker flagged to France.
Where was ALCYONE last seen?
ALCYONE was last reported in the Sea of Japan in Jun 2026 on public AIS.
What is ALCYONE's MMSI?
ALCYONE's MMSI is 228423800. Call sign FMSF. IMO 9929819.
How big is ALCYONE?
ALCYONE is about 183 m long, 32 m on the beam, drawing 8.5 m.
Is ALCYONE on the Master's Mate Safety Initiative Network?
Not yet. If ALCYONE is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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