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.

Commercial Fishing Vessel

Don Alfonso

MMSI 366811890 · Call sign WDA4666

Not yet on Master's Mate

Type

Commercial Fishing Vessel

Flag

USA

Length

24 m

Beam

6.7 m

Draft

2.7 m

Call sign

WDA4666

IMO

9091569

Official No.

1108206

AIS reports

Registered in the United States, Don Alfonso is a 24-metre fishing craft. Her hull carries a beam measuring 6.7 metres and a draft of 2.7 m. She's listed under MMSI 366811890, call sign WDA4666, IMO 9091569. Don Alfonso 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 captains

Know where the fleet is. Get Don Alfonso home safe.

Live AIS traffic, weather you can plan around, engine & systems telemetry, and a distress mesh that reaches nearby boats.

Keep the fleet in sight — free →

Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers

Wherever Don Alfonso 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 captains

The most powerful cruising platform ever built — yours, free.

Joining the Safety Initiative Network doesn't just put Don Alfonso on the map. It hands you the full bridge:

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.

Systems Monitoring

Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.

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 Don Alfonso and switch it all on

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

Claim free → unlock everything

About Don Alfonso

What kind of vessel is Don Alfonso?

Don Alfonso is a Commercial Fishing Vessel flagged to United States of America.

What is Don Alfonso's MMSI?

Don Alfonso's MMSI is 366811890. Call sign WDA4666. IMO 9091569.

How big is Don Alfonso?

Don Alfonso is about 24 m long, 6.7 m on the beam, drawing 2.7 m.

Is Don Alfonso on the Master's Mate Safety Initiative Network?

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