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

Gammie-Sue

MMSI 368204120 · Call sign WDM4185

Not yet on Master's Mate

Type

Towing Vessel

Flag

USA

Length

7.8 m

Beam

4.3 m

Draft

1.8 m

Call sign

WDM4185

Official No.

1058180

AIS reports

Registered in the United States, Gammie-Sue is a 7.8-metre utility boat. She's built with a beam measuring 4.3 metres and a 1.8-metre draft. On AIS she appears as MMSI 368204120, call sign WDM4185. Gammie-Sue 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 Gammie-Sue.

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 Gammie-Sue 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 Gammie-Sue 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 Gammie-Sue and switch it all on

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

Claim free → unlock everything

About Gammie-Sue

What kind of vessel is Gammie-Sue?

Gammie-Sue is a Towing Vessel flagged to United States of America.

What is Gammie-Sue's MMSI?

Gammie-Sue's MMSI is 368204120. Call sign WDM4185.

How big is Gammie-Sue?

Gammie-Sue is about 7.8 m long, 4.3 m on the beam, drawing 1.8 m.

Is Gammie-Sue on the Master's Mate Safety Initiative Network?

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