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.
Passenger (Inspected)
JOHN H MARTIN
MMSI 367742810 · Call sign WDI8855
Not yet on Master's MateType
Passenger (Inspected)
Flag
USALength
17.1 m
Beam
4.8 m
Draft
2.1 m
Call sign
WDI8855
Official No.
680094
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
86
On the American registry, JOHN H MARTIN is a 17.1-metre passenger boat. She carries a beam measuring 4.8 metres and a 2.1 m draft. Find her under MMSI 367742810, call sign WDI8855. JOHN H MARTIN can join the Master's Mate Safety Initiative Network for free: think of it as a watch network that has every boat's back.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard JOHN H MARTIN safe.
Distress alerting, live AIS, onboard monitoring and weather routing — the safety stack for boats that carry people.
Switch on the safety stack — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Live AIS position · Jun 9, 2026 22:13 UTC
Position
36.8040° N, 121.7861° W
Status
Under way (engine)
Speed
0.0 kn
Course
237°
Wherever JOHN H MARTIN 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 JOHN H MARTIN on the map. It hands you the full bridge:
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
Live AIS & Traffic
See every vessel around you in real time. Closest-approach warnings before they matter.
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
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 H MARTIN and switch it all on
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About JOHN H MARTIN
What kind of vessel is JOHN H MARTIN?
JOHN H MARTIN is a Passenger (Inspected) flagged to United States of America.
Where was JOHN H MARTIN last seen?
JOHN H MARTIN was last reported in around 37°N 122°W in Jun 2026 on public AIS.
What is JOHN H MARTIN's MMSI?
JOHN H MARTIN's MMSI is 367742810. Call sign WDI8855.
How big is JOHN H MARTIN?
JOHN H MARTIN is about 17.1 m long, 4.8 m on the beam, drawing 2.1 m.
Is JOHN H MARTIN on the Master's Mate Safety Initiative Network?
Not yet. If JOHN H MARTIN is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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