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
SERENITY
MMSI 367621310 · Call sign WDH4781
Not yet on Master's MateType
Recreational
Flag
USALength
11.3 m
Beam
3.7 m
Draft
3 m
Call sign
WDH4781
Official No.
1253317
Hull ID
IRINZ065L314
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
48
SERENITY, an American recreational boat, measures 11.3 metres on deck. She carries a 3.7 m beam and a 3-metre draft. She's on record as MMSI 367621310, call sign WDH4781. Sign SERENITY up free to the Master's Mate Safety Initiative Network and join a fleet that looks after its own.
Free forever · No credit card · for recreational captains
Keep SERENITY 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 · Jun 3, 2026
Position
38.7149° N, 76.4352° W
Cruising Chesapeake Bay? 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 SERENITY 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 SERENITY and switch it all on
Free to join · nothing to install to start · cancel anytime
About SERENITY
What kind of vessel is SERENITY?
SERENITY is a Recreational flagged to United States of America.
Where was SERENITY last seen?
SERENITY was last reported in Chesapeake Bay in Jun 2026 on public AIS.
What is SERENITY's MMSI?
SERENITY's MMSI is 367621310. Call sign WDH4781.
How big is SERENITY?
SERENITY is about 11.3 m long, 3.7 m on the beam, drawing 3 m.
Is SERENITY on the Master's Mate Safety Initiative Network?
Not yet. If SERENITY is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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