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.
Recreational
Who Dat
MMSI 368252910 · Call sign WDM9465
Not yet on Master's MateType
Recreational
Flag
USALength
16.4 m
Beam
4.9 m
Draft
1.3 m
Call sign
WDM9465
Official No.
1173117
AIS reports
1
Who Dat is an American private vessel — 16.4 metres overall. Her hull carries a 4.9 m beam and a draft measuring 1.3 metres. Find her under MMSI 368252910, call sign WDM9465. Who Dat is exactly the kind of boat the Master's Mate Safety Initiative Network was built for — free, simple, and always on watch.
Free forever · No credit card · for recreational captains
Keep Who Dat looked after — even when you’re not aboard.
Anchor alarms that wake you, a live camera at the dock, and weather you can trust before every run.
Look after her — claim free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever Who Dat 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 recreational captains
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put Who Dat on the map. It hands you the full bridge:
Anchor Watch
GPS-precise drag alarms that actually wake you — and your whole crew. Sleep through the night.
Onboard Cameras
Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
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.
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
Hail Any Captain
A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.
Claim Who Dat and switch it all on
Free to join · nothing to install to start · cancel anytime
About Who Dat
What kind of vessel is Who Dat?
Who Dat is a Recreational flagged to United States of America.
What is Who Dat's MMSI?
Who Dat's MMSI is 368252910. Call sign WDM9465.
How big is Who Dat?
Who Dat is about 16.4 m long, 4.9 m on the beam, drawing 1.3 m.
Is Who Dat on the Master's Mate Safety Initiative Network?
Not yet. If Who Dat is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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