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
Capt. Billy Slatten
MMSI 367007030 · Call sign WDC3380
Not yet on Master's MateType
Towing Vessel
Flag
USALength
30.7 m
Beam
10.3 m
Draft
3.7 m
Call sign
WDC3380
IMO
8964733
Official No.
1049311
AIS reports
1
An American work boat, Capt. Billy Slatten measures 30.7 metres. Below, she has a 10.3-metre beam and a draft measuring 3.7 metres. She's on record as MMSI 367007030, call sign WDC3380, IMO 8964733. There's a place for Capt. Billy Slatten on the Master's Mate Safety Initiative Network — free, community-driven, like AAA for the ocean.
Free forever · No credit card · for working boats
Built for boats that work — like Capt. Billy Slatten.
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 Capt. Billy Slatten 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 Capt. Billy Slatten 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 Capt. Billy Slatten and switch it all on
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About Capt. Billy Slatten
What kind of vessel is Capt. Billy Slatten?
Capt. Billy Slatten is a Towing Vessel flagged to United States of America.
What is Capt. Billy Slatten's MMSI?
Capt. Billy Slatten's MMSI is 367007030. Call sign WDC3380. IMO 8964733.
How big is Capt. Billy Slatten?
Capt. Billy Slatten is about 30.7 m long, 10.3 m on the beam, drawing 3.7 m.
Is Capt. Billy Slatten on the Master's Mate Safety Initiative Network?
Not yet. If Capt. Billy Slatten is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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