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
Castoro Sei
MMSI 308162000
Not yet on Master's MateFlag
BHSLength
152 m
IMO
8758603
AIS reports
2
A Bahamian boat, Castoro Sei measures 152 metres. She broadcasts as MMSI 308162000, IMO 8758603. Castoro Sei can join the Master's Mate Safety Initiative Network for free: think of it as a watch network that has every boat's back.
Free forever · No credit card
Is Castoro Sei 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 Castoro Sei 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 Castoro Sei 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 Castoro Sei and switch it all on
Free to join · nothing to install to start · cancel anytime
About Castoro Sei
What kind of vessel is Castoro Sei?
Castoro Sei is a vessel flagged to The Bahamas.
What is Castoro Sei's MMSI?
Castoro Sei's MMSI is 308162000. IMO 8758603.
How big is Castoro Sei?
Castoro Sei is about 152 m long.
Is Castoro Sei on the Master's Mate Safety Initiative Network?
Not yet. If Castoro Sei is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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