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

Mamma Mia

MMSI 368302870 · Call sign WDN6838

Not yet on Master's Mate

Type

Recreational

Flag

USA

Length

20.7 m

Beam

5.3 m

Draft

2.5 m

Call sign

WDN6838

Official No.

1216454

Hull ID

VSC67048H607

AIS reports

Mamma Mia is an American recreational vessel — 20.7 metres overall. Below, she has 5.3 metres in the beam and a draft of 2.5 m. On AIS she appears as MMSI 368302870, call sign WDN6838. Sign Mamma Mia 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 Mamma Mia 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 Mamma Mia 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 Mamma Mia 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 Mamma Mia and switch it all on

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

Claim free → unlock everything

About Mamma Mia

What kind of vessel is Mamma Mia?

Mamma Mia is a Recreational flagged to United States of America.

What is Mamma Mia's MMSI?

Mamma Mia's MMSI is 368302870. Call sign WDN6838.

How big is Mamma Mia?

Mamma Mia is about 20.7 m long, 5.3 m on the beam, drawing 2.5 m.

Is Mamma Mia on the Master's Mate Safety Initiative Network?

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