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
SHAWNEE
U.S. Official No. 516840
Not yet on Master's MateType
Offshore Supply Vessel
Flag
USALength
21.7 m
Beam
6.5 m
Draft
3.7 m
First reported
Jun 2026
AIS reports
1
SHAWNEE, an American utility boat, measures 21.7 metres on deck. She carries 6.5 metres in the beam and a 3.7-metre draft. She's on record as U.S. official number 516840. Sign SHAWNEE up free to the Master's Mate Safety Initiative Network and join a fleet that looks after its own.
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Built for boats that work — like SHAWNEE.
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 SHAWNEE roams, you're never out there alone.
Thousands of cruisers on the Master's Mate Network — ready to help the moment something goes wrong.
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The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put SHAWNEE 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 SHAWNEE and switch it all on
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About SHAWNEE
What kind of vessel is SHAWNEE?
SHAWNEE is a Offshore Supply Vessel flagged to United States of America.
What is SHAWNEE's U.S. Official No.?
SHAWNEE's U.S. Official No. is 516840.
How big is SHAWNEE?
SHAWNEE is about 21.7 m long, 6.5 m on the beam, drawing 3.7 m.
Is SHAWNEE on the Master's Mate Safety Initiative Network?
Not yet. If SHAWNEE is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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