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

Joseph Warren

MMSI 368284490 · Call sign WDN4820

Not yet on Master's Mate

Type

Commercial Fishing Vessel

Flag

USA

Length

9.8 m

Beam

3.4 m

Draft

1 m

Call sign

WDN4820

Official No.

1208193

AIS reports

On the American registry, Joseph Warren is a 9.8-metre working fishing vessel. Her hull carries a 3.4 m beam and a draft measuring 1 metres. On the registers she's MMSI 368284490, call sign WDN4820. Put Joseph Warren on the Master's Mate Safety Initiative Network — free to claim, with a whole fleet watching out for her.

Free forever · No credit card · for working captains

Know where the fleet is. Get Joseph Warren 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 Joseph Warren 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 Joseph Warren 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 Joseph Warren and switch it all on

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About Joseph Warren

What kind of vessel is Joseph Warren?

Joseph Warren is a Commercial Fishing Vessel flagged to United States of America.

What is Joseph Warren's MMSI?

Joseph Warren's MMSI is 368284490. Call sign WDN4820.

How big is Joseph Warren?

Joseph Warren is about 9.8 m long, 3.4 m on the beam, drawing 1 m.

Is Joseph Warren on the Master's Mate Safety Initiative Network?

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