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.
Pleasure Craft
MOONSTONE
MMSI 368323270 · Call sign WDN9040
Not yet on Master's MateType
Pleasure Craft
Flag
USALength
16 m
Beam
3 m
Call sign
WDN9040
Official No.
999756
First reported
Apr 2026
Last reported
Apr 2026
AIS reports
86
Out of the United States, MOONSTONE is a 16-metre recreational boat. She's built with a 3 m beam. Her papers read MMSI 368323270, call sign WDN9040. It's free to add MOONSTONE 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 recreational captains
Keep MOONSTONE 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
Last known position · Apr 23, 2026
Position
17.0208° N, 61.7760° W
Cruising the Caribbean? 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 MOONSTONE 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 MOONSTONE and switch it all on
Free to join · nothing to install to start · cancel anytime
About MOONSTONE
What kind of vessel is MOONSTONE?
MOONSTONE is a Pleasure Craft flagged to United States of America.
Where was MOONSTONE last seen?
MOONSTONE was last reported in the Caribbean in Apr 2026 on public AIS.
What is MOONSTONE's MMSI?
MOONSTONE's MMSI is 368323270. Call sign WDN9040.
How big is MOONSTONE?
MOONSTONE is about 16 m long, 3 m on the beam.
Is MOONSTONE on the Master's Mate Safety Initiative Network?
Not yet. If MOONSTONE is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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