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.
Recreational
Over-the-Horizon
MMSI 367641420 · Call sign WDH6767
Not yet on Master's MateType
Recreational
Flag
USALength
9.8 m
Beam
3.4 m
Draft
1.9 m
Call sign
WDH6767
Official No.
1149770
Hull ID
SERT2814F304
AIS reports
1
Out of the United States, Over-the-Horizon is a 9.8-metre recreational vessel. Below, she has a beam of 3.4 m and a draft measuring 1.9 metres. On the registers she's MMSI 367641420, call sign WDH6767. Sign Over-the-Horizon 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 recreational captains
Keep Over-the-Horizon looked after — even when you’re not aboard.
Anchor alarms that wake you, a live camera at the dock, and weather you can trust before every run.
Look after her — claim free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever Over-the-Horizon 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 recreational captains
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put Over-the-Horizon 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.
Onboard Cameras
Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
Live AIS & Traffic
See every vessel around you in real time. Closest-approach warnings before they matter.
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 Over-the-Horizon and switch it all on
Free to join · nothing to install to start · cancel anytime
About Over-the-Horizon
What kind of vessel is Over-the-Horizon?
Over-the-Horizon is a Recreational flagged to United States of America.
What is Over-the-Horizon's MMSI?
Over-the-Horizon's MMSI is 367641420. Call sign WDH6767.
How big is Over-the-Horizon?
Over-the-Horizon is about 9.8 m long, 3.4 m on the beam, drawing 1.9 m.
Is Over-the-Horizon on the Master's Mate Safety Initiative Network?
Not yet. If Over-the-Horizon is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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