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.

Passenger Barge (Uninspected)

Wyntje

MMSI 367024450 · Call sign WDC4427

Not yet on Master's Mate

Type

Passenger Barge (Uninspected)

Flag

USA

Length

17.1 m

Beam

4.8 m

Draft

3.1 m

Call sign

WDC4427

Official No.

604461

AIS reports

Wyntje is a passenger ferry flying the American flag, 17.1 metres long. She has a 4.8-metre beam and a draft of 3.1 m. On AIS she shows as MMSI 367024450, call sign WDC4427. Bring Wyntje aboard the Master's Mate Safety Initiative Network — free, and every captain on it has the others' backs.

Free forever · No credit card · for passenger & charter operators

Keep every soul aboard Wyntje safe.

Distress alerting, live AIS, onboard monitoring and weather routing — the safety stack for boats that carry people.

Switch on the safety stack — free →

Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers

Wherever Wyntje 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 passenger & charter operators

The most powerful cruising platform ever built — yours, free.

Joining the Safety Initiative Network doesn't just put Wyntje on the map. It hands you the full bridge:

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.

Systems Monitoring

Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.

Weather & Routing

GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.

Anchor Watch

GPS-precise drag alarms that actually wake you — and your whole crew. Sleep through the night.

Worldwide Charts

Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.

Onboard Cameras

Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.

Hail Any Captain

A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.

Claim Wyntje and switch it all on

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

Claim free → unlock everything

About Wyntje

What kind of vessel is Wyntje?

Wyntje is a Passenger Barge (Uninspected) flagged to United States of America.

What is Wyntje's MMSI?

Wyntje's MMSI is 367024450. Call sign WDC4427.

How big is Wyntje?

Wyntje is about 17.1 m long, 4.8 m on the beam, drawing 3.1 m.

Is Wyntje on the Master's Mate Safety Initiative Network?

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