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.
Industrial Vessel
Defender
MMSI 367428340 · Call sign WDF2461
Not yet on Master's MateType
Industrial Vessel
Flag
USALength
42.7 m
Beam
21.3 m
Draft
3.8 m
Call sign
WDF2461
Official No.
1215575
AIS reports
1
On the American registry, Defender is a 42.7-metre commercial ship. Her hull carries a 21.3-metre beam and a draft of 3.8 m. She broadcasts as MMSI 367428340, call sign WDF2461. Join Defender to the Master's Mate Safety Initiative Network — free, and built by cruisers for cruisers.
Free forever · No credit card · for commercial operators
Eyes on Defender, around the clock.
Real-time AIS, full systems telemetry, distress alerting and worldwide charts — your hull on one dashboard, from anywhere.
Put her on the dashboard — 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 commercial operators
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.
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.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
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.
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 Industrial Vessel flagged to United States of America.
What is Defender's MMSI?
Defender's MMSI is 367428340. Call sign WDF2461.
How big is Defender?
Defender is about 42.7 m long, 21.3 m on the beam, drawing 3.8 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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