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.
Law Enforcement
KCG 523
MMSI 440098880
Not yet on Master's MateType
Law Enforcement
Flag
KORFirst reported
Jun 2026
Last reported
Jun 2026
AIS reports
85
KCG 523 is a vessel, under South Korean registration. She's on record as MMSI 440098880. Bring KCG 523 aboard the Master's Mate Safety Initiative Network — free, and every captain on it has the others' backs.
Free forever · No credit card
Is KCG 523 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
Last known position · Jun 4, 2026
Position
35.0536° N, 128.9805° E
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.
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The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put KCG 523 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 KCG 523 and switch it all on
Free to join · nothing to install to start · cancel anytime
About KCG 523
What kind of vessel is KCG 523?
KCG 523 is a Law Enforcement flagged to South Korea.
Where was KCG 523 last seen?
KCG 523 was last reported in the Sea of Japan in Jun 2026 on public AIS.
What is KCG 523's MMSI?
KCG 523's MMSI is 440098880.
Is KCG 523 on the Master's Mate Safety Initiative Network?
Not yet. If KCG 523 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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