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 367665840 · Call sign WDH9220

Not yet on Master's Mate

Type

Recreational

Flag

USA

Length

13.3 m

Beam

7.4 m

Draft

3 m

Call sign

WDH9220

Official No.

1250323

AIS reports

Serenity, a pleasure craft flying the flag of the United States, measures 13.3 metres on deck. She's built with 7.4 metres in the beam and a 3 m draft. Her papers read MMSI 367665840, call sign WDH9220. Serenity can be part of the Master's Mate Safety Initiative Network at no cost — a community watch that never sleeps.

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

Wherever Serenity 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 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

Claim free → unlock everything

About Serenity

What kind of vessel is Serenity?

Serenity is a Recreational flagged to United States of America.

What is Serenity's MMSI?

Serenity's MMSI is 367665840. Call sign WDH9220.

How big is Serenity?

Serenity is about 13.3 m long, 7.4 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).