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.
Commercial Fishing Vessel
Defender
MMSI 368053060 · Call sign WDK4222
Not yet on Master's MateType
Commercial Fishing Vessel
Flag
USALength
14 m
Beam
4.9 m
Draft
2.5 m
Call sign
WDK4222
Official No.
924118
AIS reports
1
An American commercial fishing boat, Defender measures 14 metres. Below, she has a beam of 4.9 m and a draft of 2.5 m. She's listed under MMSI 368053060, call sign WDK4222. It's free to add Defender to the Master's Mate Safety Initiative Network — like AAA for the ocean, run by the cruisers who use it.
Free forever · No credit card · for working captains
Know where the fleet is. Get Defender home safe.
Live AIS traffic, weather you can plan around, engine & systems telemetry, and a distress mesh that reaches nearby boats.
Keep the fleet in sight — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever Defender 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 captains
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put Defender on the map. It hands you the full bridge:
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.
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
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 Defender and switch it all on
Free to join · nothing to install to start · cancel anytime
About Defender
What kind of vessel is Defender?
Defender is a Commercial Fishing Vessel flagged to United States of America.
What is Defender's MMSI?
Defender's MMSI is 368053060. Call sign WDK4222.
How big is Defender?
Defender is about 14 m long, 4.9 m on the beam, drawing 2.5 m.
Is Defender on the Master's Mate Safety Initiative Network?
Not yet. If Defender is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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