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.
Unknown
OR 3877
U.S. Official No. 630878
Not yet on Master's MateType
Unknown
Flag
USALength
59.5 m
Beam
10.7 m
Draft
3.3 m
First reported
Jun 2026
AIS reports
1
On the American registry, OR 3877 is a 59.5-metre craft. Her hull carries a 10.7-metre beam and a draft of 3.3 m. Her papers read U.S. official number 630878. Join OR 3877 to the Master's Mate Safety Initiative Network — free, and built by cruisers for cruisers.
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Is OR 3877 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 OR 3877 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 OR 3877 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 OR 3877 and switch it all on
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About OR 3877
What kind of vessel is OR 3877?
OR 3877 is a Unknown flagged to United States of America.
What is OR 3877's U.S. Official No.?
OR 3877's U.S. Official No. is 630878.
How big is OR 3877?
OR 3877 is about 59.5 m long, 10.7 m on the beam, drawing 3.3 m.
Is OR 3877 on the Master's Mate Safety Initiative Network?
Not yet. If OR 3877 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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