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
JOHN MARSHALL
MMSI 367649810 · Call sign WDH7606
Not yet on Master's MateType
Towing
Flag
USALength
30 m
Beam
9 m
Draft
4.1 m
Call sign
WDH7606
IMO
7223261
Official No.
541803
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
77
On the American registry, JOHN MARSHALL is a 30-metre work boat. Her hull carries a beam of 9 m and a draft measuring 4.1 metres. On the registers she's MMSI 367649810, call sign WDH7606, IMO 7223261. Put JOHN MARSHALL on the Master's Mate Safety Initiative Network — free to claim, with a whole fleet watching out for her.
Free forever · No credit card · for working boats
Built for boats that work — like JOHN MARSHALL.
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
Last known position · Jun 3, 2026
Position
41.7170° N, 87.5404° W
Working Lake Michigan? 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 JOHN MARSHALL 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 JOHN MARSHALL and switch it all on
Free to join · nothing to install to start · cancel anytime
About JOHN MARSHALL
What kind of vessel is JOHN MARSHALL?
JOHN MARSHALL is a Towing flagged to United States of America.
Where was JOHN MARSHALL last seen?
JOHN MARSHALL was last reported in Lake Michigan in Jun 2026 on public AIS.
What is JOHN MARSHALL's MMSI?
JOHN MARSHALL's MMSI is 367649810. Call sign WDH7606. IMO 7223261.
How big is JOHN MARSHALL?
JOHN MARSHALL is about 30 m long, 9 m on the beam, drawing 4.1 m.
Is JOHN MARSHALL on the Master's Mate Safety Initiative Network?
Not yet. If JOHN MARSHALL is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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