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
Don Carlos
MMSI 367776530 · Call sign WDJ4320
Not yet on Master's MateType
Towing Vessel
Flag
USALength
12.3 m
Beam
6.1 m
Draft
1.8 m
Call sign
WDJ4320
Official No.
649392
AIS reports
1
Registered in the United States, Don Carlos is a 12.3-metre utility vessel. She carries a beam measuring 6.1 metres and a 1.8-metre draft. On AIS she appears as MMSI 367776530, call sign WDJ4320. Put Don Carlos 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 Don Carlos.
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 Don Carlos 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 Don Carlos 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 Don Carlos and switch it all on
Free to join · nothing to install to start · cancel anytime
About Don Carlos
What kind of vessel is Don Carlos?
Don Carlos is a Towing Vessel flagged to United States of America.
What is Don Carlos's MMSI?
Don Carlos's MMSI is 367776530. Call sign WDJ4320.
How big is Don Carlos?
Don Carlos is about 12.3 m long, 6.1 m on the beam, drawing 1.8 m.
Is Don Carlos on the Master's Mate Safety Initiative Network?
Not yet. If Don Carlos is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
© 2026 Master’s Mate. All rights reserved.