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

William Marshall

MMSI 367133280 · Call sign WDK7984

Not yet on Master's Mate

Type

Towing Vessel

Flag

USA

Length

11.5 m

Beam

4.3 m

Draft

1.3 m

Call sign

WDK7984

Official No.

288988

AIS reports

William Marshall is a service vessel under the American flag, measuring 11.5 metres. William Marshall has a beam measuring 4.3 metres and a 1.3 m draft. On AIS she shows as MMSI 367133280, call sign WDK7984. Join William Marshall to the Master's Mate Safety Initiative Network — free, and built by cruisers for cruisers.

Free forever · No credit card · for working boats

Built for boats that work — like William Marshall.

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 William Marshall 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 William Marshall 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 William Marshall and switch it all on

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About William Marshall

What kind of vessel is William Marshall?

William Marshall is a Towing Vessel flagged to United States of America.

What is William Marshall's MMSI?

William Marshall's MMSI is 367133280. Call sign WDK7984.

How big is William Marshall?

William Marshall is about 11.5 m long, 4.3 m on the beam, drawing 1.3 m.

Is William Marshall on the Master's Mate Safety Initiative Network?

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