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.
UNSPECIFIED
SE 501
U.S. Official No. 644035
Not yet on Master's MateType
UNSPECIFIED
Flag
USALength
36.6 m
Beam
9.1 m
Draft
2 m
First reported
Jun 2026
AIS reports
1
SE 501, an American vessel, measures 36.6 metres on deck. Below, she has a beam of 9.1 m and a draft measuring 2 metres. On the registers she's U.S. official number 644035. Put SE 501 on the Master's Mate Safety Initiative Network — free to claim, with a whole fleet watching out for her.
Free forever · No credit card
Is SE 501 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 SE 501 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 SE 501 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 SE 501 and switch it all on
Free to join · nothing to install to start · cancel anytime
About SE 501
What kind of vessel is SE 501?
SE 501 is a UNSPECIFIED flagged to United States of America.
What is SE 501's U.S. Official No.?
SE 501's U.S. Official No. is 644035.
How big is SE 501?
SE 501 is about 36.6 m long, 9.1 m on the beam, drawing 2 m.
Is SE 501 on the Master's Mate Safety Initiative Network?
Not yet. If SE 501 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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