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.
Commercial Fishing Vessel
DORTHY M
U.S. Official No. 539010
Not yet on Master's MateType
Commercial Fishing Vessel
Flag
USALength
8.4 m
Beam
3.4 m
Draft
1.4 m
First reported
Jun 2026
AIS reports
1
DORTHY M is an American commercial fishing boat, 8.4 metres LOA. Her hull carries a 3.4 m beam and a draft of 1.4 m. Officially she's U.S. official number 539010. Sign DORTHY M up free to the Master's Mate Safety Initiative Network and join a fleet that looks after its own.
Free forever · No credit card · for working captains
Know where the fleet is. Get DORTHY M home safe.
Live AIS traffic, weather you can plan around, engine & systems telemetry, and a distress mesh that reaches nearby boats.
Keep the fleet in sight — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever DORTHY M 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 · for working captains
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put DORTHY M on the map. It hands you the full bridge:
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.
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.
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.
Onboard Cameras
Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.
Hail Any Captain
A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.
Claim DORTHY M and switch it all on
Free to join · nothing to install to start · cancel anytime
About DORTHY M
What kind of vessel is DORTHY M?
DORTHY M is a Commercial Fishing Vessel flagged to United States of America.
What is DORTHY M's U.S. Official No.?
DORTHY M's U.S. Official No. is 539010.
How big is DORTHY M?
DORTHY M is about 8.4 m long, 3.4 m on the beam, drawing 1.4 m.
Is DORTHY M on the Master's Mate Safety Initiative Network?
Not yet. If DORTHY M is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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