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

Mary D

MMSI 366986970 · Call sign WDC2048

Not yet on Master's Mate

Type

Towing Vessel

Flag

USA

Length

17.5 m

Beam

6.2 m

Draft

2.2 m

Call sign

WDC2048

Official No.

638641

AIS reports

Registered in the United States, Mary D is a 17.5-metre working vessel. She has a beam of 6.2 m and a draft measuring 2.2 metres. Find her under MMSI 366986970, call sign WDC2048. The Master's Mate Safety Initiative Network welcomes Mary D — free to join, cruiser-run, and always on watch.

Free forever · No credit card · for working boats

Built for boats that work — like Mary D.

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 Mary D 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 Mary D 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 Mary D and switch it all on

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

Claim free → unlock everything

About Mary D

What kind of vessel is Mary D?

Mary D is a Towing Vessel flagged to United States of America.

What is Mary D's MMSI?

Mary D's MMSI is 366986970. Call sign WDC2048.

How big is Mary D?

Mary D is about 17.5 m long, 6.2 m on the beam, drawing 2.2 m.

Is Mary D on the Master's Mate Safety Initiative Network?

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