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.
Vessel
H2O
MMSI 368199550 · Call sign WDM3690
Not yet on Master's MateFlag
USACall sign
WDM3690
Official No.
DL9124AM
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
86
On the American registry, H2O is a boat. On AIS she shows as MMSI 368199550, call sign WDM3690. There's a place for H2O on the Master's Mate Safety Initiative Network — free, community-driven, like AAA for the ocean.
Free forever · No credit card
Is H2O your boat?
Your free claim unlocks the most powerful cruising platform ever built — anchor watch, worldwide charts, live AIS, weather routing, and a network of cruisers watching each other’s backs.
Claim this boat — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Live AIS position · Jun 9, 2026 07:44 UTC
Position
37.9366° N, 23.6617° E
Status
Under way (engine)
Speed
0.1 kn
Course
360°
Crossing the Aegean Sea? 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
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put H2O 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.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
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.
Onboard Cameras
Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
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 H2O and switch it all on
Free to join · nothing to install to start · cancel anytime
About H2O
What kind of vessel is H2O?
H2O is a vessel flagged to United States of America.
Where was H2O last seen?
H2O was last reported in the Aegean Sea in Jun 2026 on public AIS.
What is H2O's MMSI?
H2O's MMSI is 368199550. Call sign WDM3690.
Is H2O on the Master's Mate Safety Initiative Network?
Not yet. If H2O is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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