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

JOHN T STELLMAN

MMSI 366097520 · Call sign WAQ3524

Not yet on Master's Mate

Type

Towing Vessel

Flag

USA

Length

21 m

Beam

7.9 m

Draft

2.6 m

Call sign

WAQ3524

Official No.

542081

AIS reports

Registered in the United States, JOHN T STELLMAN is a 21-metre harbour workboat. Her hull carries a 7.9 m beam and a draft of 2.6 m. Officially she's MMSI 366097520, call sign WAQ3524. JOHN T STELLMAN 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 working boats

Built for boats that work — like JOHN T STELLMAN.

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 JOHN T STELLMAN 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 JOHN T STELLMAN 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 JOHN T STELLMAN and switch it all on

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

Claim free → unlock everything

About JOHN T STELLMAN

What kind of vessel is JOHN T STELLMAN?

JOHN T STELLMAN is a Towing Vessel flagged to United States of America.

What is JOHN T STELLMAN's MMSI?

JOHN T STELLMAN's MMSI is 366097520. Call sign WAQ3524.

How big is JOHN T STELLMAN?

JOHN T STELLMAN is about 21 m long, 7.9 m on the beam, drawing 2.6 m.

Is JOHN T STELLMAN on the Master's Mate Safety Initiative Network?

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