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
Donn L Williams
MMSI 367723590 · Call sign WDI6922
Not yet on Master's MateType
Towing Vessel
Flag
USALength
14 m
Beam
5.8 m
Draft
1.5 m
Call sign
WDI6922
Official No.
279488
AIS reports
1
Donn L Williams is an American workboat — 14 metres overall. She carries a 5.8-metre beam and a 1.5 m draft. On the registers she's MMSI 367723590, call sign WDI6922. It's free to add Donn L Williams to the Master's Mate Safety Initiative Network — like AAA for the ocean, run by the cruisers who use it.
Free forever · No credit card · for working boats
Built for boats that work — like Donn L Williams.
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 Donn L Williams 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 Donn L Williams 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 Donn L Williams and switch it all on
Free to join · nothing to install to start · cancel anytime
About Donn L Williams
What kind of vessel is Donn L Williams?
Donn L Williams is a Towing Vessel flagged to United States of America.
What is Donn L Williams's MMSI?
Donn L Williams's MMSI is 367723590. Call sign WDI6922.
How big is Donn L Williams?
Donn L Williams is about 14 m long, 5.8 m on the beam, drawing 1.5 m.
Is Donn L Williams on the Master's Mate Safety Initiative Network?
Not yet. If Donn L Williams is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
© 2026 Master’s Mate. All rights reserved.