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
Sentinel I
MMSI 636013442
Not yet on Master's MateFlag
LBRLength
180 m
IMO
8309567
AIS reports
2
Registered in Liberia, Sentinel I is an 180-metre boat. On AIS she appears as MMSI 636013442, IMO 8309567. Sentinel I is welcome on the Master's Mate Safety Initiative Network — a free, community-run watch where boats look out for one another.
Free forever · No credit card
Is Sentinel I 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
Wherever Sentinel I roams, 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 Sentinel I 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 Sentinel I and switch it all on
Free to join · nothing to install to start · cancel anytime
About Sentinel I
What kind of vessel is Sentinel I?
Sentinel I is a vessel flagged to Liberia.
What is Sentinel I's MMSI?
Sentinel I's MMSI is 636013442. IMO 8309567.
How big is Sentinel I?
Sentinel I is about 180 m long.
Is Sentinel I on the Master's Mate Safety Initiative Network?
Not yet. If Sentinel I is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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