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

SEA SHELL

MMSI 367595790 · Call sign WDH2257

Not yet on Master's Mate

Type

Recreational

Flag

USA

Length

23.8 m

Beam

6.1 m

Draft

3.5 m

Call sign

WDH2257

Official No.

1091929

AIS reports

Out of the United States, SEA SHELL is a 23.8-metre weekend cruiser. Below, she has a beam of 6.1 m and a draft measuring 3.5 metres. She's on record as MMSI 367595790, call sign WDH2257. Give SEA SHELL the backing of the Master's Mate Safety Initiative Network — free, and a fleet that has her back.

Free forever · No credit card · for recreational captains

Keep SEA SHELL 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 SEA SHELL 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 SEA SHELL 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 SEA SHELL and switch it all on

Free to join · nothing to install to start · cancel anytime

Claim free → unlock everything

About SEA SHELL

What kind of vessel is SEA SHELL?

SEA SHELL is a Recreational flagged to United States of America.

What is SEA SHELL's MMSI?

SEA SHELL's MMSI is 367595790. Call sign WDH2257.

How big is SEA SHELL?

SEA SHELL is about 23.8 m long, 6.1 m on the beam, drawing 3.5 m.

Is SEA SHELL on the Master's Mate Safety Initiative Network?

Not yet. If SEA SHELL is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).