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.
Unclassified
ARCTIC SEA
MMSI 303221000 · Call sign EX235
Not yet on Master's MateType
Unclassified
Flag
USALength
38.4 m
Beam
9.2 m
Draft
3.8 m
Call sign
EX235
IMO
5201362
Official No.
284504
AIS reports
3
ARCTIC SEA, an American craft, measures 38.4 metres on deck. Below, she has a 9.2-metre beam and a draft measuring 3.8 metres. She's on record as MMSI 303221000, call sign EX235, IMO 5201362. Claim ARCTIC SEA free on the Master's Mate Safety Initiative Network and let nearby cruisers have her back.
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Is ARCTIC SEA 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 ARCTIC SEA roams, 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 ARCTIC SEA 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 ARCTIC SEA and switch it all on
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About ARCTIC SEA
What kind of vessel is ARCTIC SEA?
ARCTIC SEA is a Unclassified flagged to United States of America.
What is ARCTIC SEA's MMSI?
ARCTIC SEA's MMSI is 303221000. Call sign EX235. IMO 5201362.
How big is ARCTIC SEA?
ARCTIC SEA is about 38.4 m long, 9.2 m on the beam, drawing 3.8 m.
Is ARCTIC SEA on the Master's Mate Safety Initiative Network?
Not yet. If ARCTIC SEA is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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