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
DEFIANCE
MMSI 367047240 · Call sign WDC5842
Not yet on Master's MateType
Towing Vessel
Flag
USALength
85 m
Beam
32 m
Draft
3.8 m
Call sign
WDC5842
Official No.
587247
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
86
On the American registry, DEFIANCE is an 85-metre service vessel. She's built with a beam of 32 m and a 3.8 m draft. On the registers she's MMSI 367047240, call sign WDC5842. Put DEFIANCE on the free Master's Mate Safety Initiative Network and keep the working fleet looking out for each other.
Free forever · No credit card · for working boats
Built for boats that work — like DEFIANCE.
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 11:33 UTC
Position
45.8460° N, 122.7845° W
Status
Pushing ahead
Speed
8.4 kn
Course
5°
Destination
WAUNA
ETA
06-08 21:27 UTC
Wherever DEFIANCE 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 DEFIANCE 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 DEFIANCE and switch it all on
Free to join · nothing to install to start · cancel anytime
About DEFIANCE
What kind of vessel is DEFIANCE?
DEFIANCE is a Towing Vessel flagged to United States of America.
Where was DEFIANCE last seen?
DEFIANCE was last reported in around 46°N 123°W in Jun 2026 on public AIS.
What is DEFIANCE's MMSI?
DEFIANCE's MMSI is 367047240. Call sign WDC5842.
How big is DEFIANCE?
DEFIANCE is about 85 m long, 32 m on the beam, drawing 3.8 m.
Is DEFIANCE on the Master's Mate Safety Initiative Network?
Not yet. If DEFIANCE is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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