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.
Towing Vessel
Mary H
MMSI 366962130 · Call sign WDI7122
Not yet on Master's MateType
Towing Vessel
Flag
USALength
19.7 m
Beam
6.7 m
Draft
2.7 m
Call sign
WDI7122
Official No.
640144
AIS reports
2
Mary H flies the American flag — a 19.7-metre work boat. Below, she has a 6.7-metre beam and a draft measuring 2.7 metres. On AIS she shows as MMSI 366962130, call sign WDI7122. Sign Mary H 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 boats
Built for boats that work — like Mary H.
Engine & systems telemetry, live AIS, weather and distress alerting for the vessels that earn their keep.
Rig her out — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Live AIS position · Jun 9, 2026 19:23 UTC
Position
40.5494° N, 74.0415° W
Speed
10.0 kn
Course
15°
Working off the U.S. East Coast? 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 boats
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put Mary H on the map. It hands you the full bridge:
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.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
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 Mary H and switch it all on
Free to join · nothing to install to start · cancel anytime
About Mary H
What kind of vessel is Mary H?
Mary H is a Towing Vessel flagged to United States of America.
Where was Mary H last seen?
Mary H was last reported in off the U.S. East Coast on public AIS.
What is Mary H's MMSI?
Mary H's MMSI is 366962130. Call sign WDI7122.
How big is Mary H?
Mary H is about 19.7 m long, 6.7 m on the beam, drawing 2.7 m.
Is Mary H on the Master's Mate Safety Initiative Network?
Not yet. If Mary H is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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