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.
Offshore Supply Vessel
SEA CAT
MMSI 366947830 · Call sign WAC8660
Not yet on Master's MateType
Offshore Supply Vessel
Flag
USALength
29 m
Beam
7.9 m
Draft
2.1 m
Call sign
WAC8660
Official No.
596738
AIS reports
1
Registered in the United States, SEA CAT is a 29-metre working craft. She has 7.9 metres in the beam and a draft of 2.1 m. She's on record as MMSI 366947830, call sign WAC8660. Bring SEA CAT aboard the Master's Mate Safety Initiative Network — free, and every captain on it has the others' backs.
Free forever · No credit card · for working boats
Built for boats that work — like SEA CAT.
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 SEA CAT 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 SEA CAT 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 SEA CAT and switch it all on
Free to join · nothing to install to start · cancel anytime
About SEA CAT
What kind of vessel is SEA CAT?
SEA CAT is a Offshore Supply Vessel flagged to United States of America.
What is SEA CAT's MMSI?
SEA CAT's MMSI is 366947830. Call sign WAC8660.
How big is SEA CAT?
SEA CAT is about 29 m long, 7.9 m on the beam, drawing 2.1 m.
Is SEA CAT on the Master's Mate Safety Initiative Network?
Not yet. If SEA CAT 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.