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
ST JOHN
MMSI 367002390 · Call sign WDC3083
Not yet on Master's MateType
Towing Vessel
Flag
USALength
25.6 m
Beam
7.9 m
Draft
2.8 m
Call sign
WDC3083
Official No.
272543
AIS reports
1
ST JOHN, a work boat under American registration, measures 25.6 metres on deck. Below, she has a 7.9-metre beam and a draft measuring 2.8 metres. Her papers read MMSI 367002390, call sign WDC3083. ST JOHN earns her keep on the water; the free Master's Mate Safety Initiative Network keeps a watching fleet and a distress mesh close at hand.
Free forever · No credit card · for working boats
Built for boats that work — like ST JOHN.
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
Wherever ST JOHN 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 working boats
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put ST JOHN 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 ST JOHN and switch it all on
Free to join · nothing to install to start · cancel anytime
About ST JOHN
What kind of vessel is ST JOHN?
ST JOHN is a Towing Vessel flagged to United States of America.
What is ST JOHN's MMSI?
ST JOHN's MMSI is 367002390. Call sign WDC3083.
How big is ST JOHN?
ST JOHN is about 25.6 m long, 7.9 m on the beam, drawing 2.8 m.
Is ST JOHN on the Master's Mate Safety Initiative Network?
Not yet. If ST JOHN is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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