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
JOHN KNOX
MMSI 366896940 · Call sign WDB4298
Not yet on Master's MateType
Towing Vessel
Flag
USALength
29.9 m
Beam
8.5 m
Draft
3.6 m
Call sign
WDB4298
IMO
8035312
Official No.
1140804
AIS reports
1
An American service vessel, JOHN KNOX measures 29.9 metres. She carries a beam of 8.5 m and a 3.6 m draft. Find her under MMSI 366896940, call sign WDB4298, IMO 8035312. JOHN KNOX belongs on the Master's Mate Safety Initiative Network, a free safety net shared by boats the world over.
Free forever · No credit card · for working boats
Built for boats that work — like JOHN KNOX.
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 JOHN KNOX 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 JOHN KNOX 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 KNOX and switch it all on
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About JOHN KNOX
What kind of vessel is JOHN KNOX?
JOHN KNOX is a Towing Vessel flagged to United States of America.
What is JOHN KNOX's MMSI?
JOHN KNOX's MMSI is 366896940. Call sign WDB4298. IMO 8035312.
How big is JOHN KNOX?
JOHN KNOX is about 29.9 m long, 8.5 m on the beam, drawing 3.6 m.
Is JOHN KNOX on the Master's Mate Safety Initiative Network?
Not yet. If JOHN KNOX is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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