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
C Horizon
MMSI 440130300
Not yet on Master's MateFlag
KORLength
85 m
IMO
9231717
AIS reports
2
On the South Korean registry, C Horizon is an 85-metre boat. She broadcasts as MMSI 440130300, IMO 9231717. It's free to add C Horizon to the Master's Mate Safety Initiative Network — like AAA for the ocean, run by the cruisers who use it.
Free forever · No credit card
Is C Horizon 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 01:36 UTC
Position
35.0736° N, 129.0012° E
Status
Under way (engine)
Speed
8.0 kn
Course
3°
Destination
BUSAN
ETA
06-09 11:00 UTC
Crossing 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
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put C Horizon 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 C Horizon and switch it all on
Free to join · nothing to install to start · cancel anytime
About C Horizon
What kind of vessel is C Horizon?
C Horizon is a vessel flagged to South Korea.
Where was C Horizon last seen?
C Horizon was last reported in the Sea of Japan on public AIS.
What is C Horizon's MMSI?
C Horizon's MMSI is 440130300. IMO 9231717.
How big is C Horizon?
C Horizon is about 85 m long.
Is C Horizon on the Master's Mate Safety Initiative Network?
Not yet. If C Horizon is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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