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 Legacy
MMSI 366818020 · Call sign WDA5243
Not yet on Master's MateType
Offshore Supply Vessel
Flag
USALength
23.2 m
Beam
16.8 m
Draft
2.4 m
Call sign
WDA5243
IMO
8767422
Official No.
634022
AIS reports
1
An American service vessel, Superior Legacy measures 23.2 metres. She carries a 16.8 m beam and a 2.4 m draft. On the registers she's MMSI 366818020, call sign WDA5243, IMO 8767422. Working vessels like Superior Legacy are never truly alone on the Master's Mate Safety Initiative Network — free, with a fleet on watch.
Free forever · No credit card · for working boats
Built for boats that work — like Superior Legacy.
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 Legacy 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 Legacy 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 Legacy and switch it all on
Free to join · nothing to install to start · cancel anytime
About Superior Legacy
What kind of vessel is Superior Legacy?
Superior Legacy is a Offshore Supply Vessel flagged to United States of America.
What is Superior Legacy's MMSI?
Superior Legacy's MMSI is 366818020. Call sign WDA5243. IMO 8767422.
How big is Superior Legacy?
Superior Legacy is about 23.2 m long, 16.8 m on the beam, drawing 2.4 m.
Is Superior Legacy on the Master's Mate Safety Initiative Network?
Not yet. If Superior Legacy is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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