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
Superior Concept
MMSI 366817870 · Call sign WDA5230
Not yet on Master's MateType
Offshore Supply Vessel
Flag
USALength
22.2 m
Beam
11 m
Draft
2.1 m
Call sign
WDA5230
IMO
8767379
Official No.
630849
AIS reports
1
An American workboat, Superior Concept measures 22.2 metres. She carries 11 metres in the beam and a 2.1 m draft. She's listed under MMSI 366817870, call sign WDA5230, IMO 8767379. It's free to add Superior Concept to the Master's Mate Safety Initiative Network — like AAA for the ocean, run by the cruisers who use it.
Free forever · No credit card · for working boats
Built for boats that work — like Superior Concept.
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 Superior Concept 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 Superior Concept 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 Superior Concept and switch it all on
Free to join · nothing to install to start · cancel anytime
About Superior Concept
What kind of vessel is Superior Concept?
Superior Concept is a Offshore Supply Vessel flagged to United States of America.
What is Superior Concept's MMSI?
Superior Concept's MMSI is 366817870. Call sign WDA5230. IMO 8767379.
How big is Superior Concept?
Superior Concept is about 22.2 m long, 11 m on the beam, drawing 2.1 m.
Is Superior Concept on the Master's Mate Safety Initiative Network?
Not yet. If Superior Concept is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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