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 Principle
MMSI 366818070 · Call sign WDA5248
Not yet on Master's MateType
Offshore Supply Vessel
Flag
USALength
23.2 m
Beam
11.6 m
Draft
2.3 m
Call sign
WDA5248
IMO
8766155
Official No.
626741
AIS reports
1
On the American registry, Superior Principle is a 23.2-metre service vessel. Superior Principle has a 11.6 m beam and a 2.3 m draft. She's on record as MMSI 366818070, call sign WDA5248, IMO 8766155. Bring Superior Principle 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 Superior Principle.
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 Principle 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 Principle 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 Principle and switch it all on
Free to join · nothing to install to start · cancel anytime
About Superior Principle
What kind of vessel is Superior Principle?
Superior Principle is a Offshore Supply Vessel flagged to United States of America.
What is Superior Principle's MMSI?
Superior Principle's MMSI is 366818070. Call sign WDA5248. IMO 8766155.
How big is Superior Principle?
Superior Principle is about 23.2 m long, 11.6 m on the beam, drawing 2.3 m.
Is Superior Principle on the Master's Mate Safety Initiative Network?
Not yet. If Superior Principle is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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