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.

Towing Vessel

Johannsen Girls

MMSI 367443290 · Call sign WDF3724

Not yet on Master's Mate

Type

Towing Vessel

Flag

USA

Length

11.5 m

Beam

5 m

Draft

2.1 m

Call sign

WDF3724

Official No.

598283

AIS reports

Johannsen Girls is an utility vessel on the the United States registry, 11.5 metres overall. She carries a beam measuring 5 metres and a 2.1-metre draft. Look for MMSI 367443290, call sign WDF3724. Johannsen Girls can join the Master's Mate Safety Initiative Network for free: think of it as a watch network that has every boat's back.

Free forever · No credit card · for working boats

Built for boats that work — like Johannsen Girls.

Engine & systems telemetry, live AIS, weather and distress alerting for the vessels that earn their keep.

Rig her out — free →

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

Wherever Johannsen Girls 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 working boats

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

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

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.

Weather & Routing

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

Distress Mesh

Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.

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 Johannsen Girls and switch it all on

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About Johannsen Girls

What kind of vessel is Johannsen Girls?

Johannsen Girls is a Towing Vessel flagged to United States of America.

What is Johannsen Girls's MMSI?

Johannsen Girls's MMSI is 367443290. Call sign WDF3724.

How big is Johannsen Girls?

Johannsen Girls is about 11.5 m long, 5 m on the beam, drawing 2.1 m.

Is Johannsen Girls on the Master's Mate Safety Initiative Network?

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