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.
Sailing
WATERMARK III
MMSI 367046170 · Call sign WDC5771
Not yet on Master's MateType
Sailing
Flag
USALength
14 m
Beam
4 m
Draft
2.8 m
Call sign
WDC5771
Official No.
1170391
Hull ID
TDL44514K405
First reported
Apr 2026
Last reported
Apr 2026
AIS reports
86
WATERMARK III flies the American flag — a 14-metre cruising yacht. She carries a beam of 4 m and a 2.8-metre draft. Her registration reads MMSI 367046170, call sign WDC5771. Join WATERMARK III to the Master's Mate Safety Initiative Network — free, and built by cruisers for cruisers.
Free forever · No credit card · for cruisers
Sleep easy on the hook aboard WATERMARK III.
GPS-precise anchor-drag alarms, ETA-calibrated weather routing, worldwide charts, and cruisers watching each other’s backs.
Set her anchor watch — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Last known position · Apr 17, 2026
Position
17.0654° N, 61.8845° W
Sailing 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 cruisers
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put WATERMARK III 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.
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.
Hail Any Captain
A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
Live AIS & Traffic
See every vessel around you in real time. Closest-approach warnings before they matter.
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.
Claim WATERMARK III and switch it all on
Free to join · nothing to install to start · cancel anytime
About WATERMARK III
What kind of vessel is WATERMARK III?
WATERMARK III is a Sailing flagged to United States of America.
Where was WATERMARK III last seen?
WATERMARK III was last reported in the Caribbean in Apr 2026 on public AIS.
What is WATERMARK III's MMSI?
WATERMARK III's MMSI is 367046170. Call sign WDC5771.
How big is WATERMARK III?
WATERMARK III is about 14 m long, 4 m on the beam, drawing 2.8 m.
Is WATERMARK III on the Master's Mate Safety Initiative Network?
Not yet. If WATERMARK III is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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