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
Z THREE
MMSI 366763450 · Call sign WCY9454
Not yet on Master's MateType
Towing Vessel
Flag
USALength
26.7 m
Beam
9.8 m
Draft
4.5 m
Call sign
WCY9454
IMO
9194153
Official No.
1072784
AIS reports
1
Z THREE, a workboat hailing from the United States, measures 26.7 metres on deck. She carries a 9.8-metre beam and a 4.5 m draft. Officially she's MMSI 366763450, call sign WCY9454, IMO 9194153. Z THREE can join the Master's Mate Safety Initiative Network for free: think of it as a watch network that has every boat's back.
Free forever · No credit card · for working boats
Built for boats that work — like Z THREE.
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 Z THREE 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 Z THREE 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 Z THREE and switch it all on
Free to join · nothing to install to start · cancel anytime
About Z THREE
What kind of vessel is Z THREE?
Z THREE is a Towing Vessel flagged to United States of America.
What is Z THREE's MMSI?
Z THREE's MMSI is 366763450. Call sign WCY9454. IMO 9194153.
How big is Z THREE?
Z THREE is about 26.7 m long, 9.8 m on the beam, drawing 4.5 m.
Is Z THREE on the Master's Mate Safety Initiative Network?
Not yet. If Z THREE is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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