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

Jon S

MMSI 367534510 · Call sign WDG4245

Not yet on Master's Mate

Type

Commercial Fishing Vessel

Flag

USA

Length

11.6 m

Beam

3.8 m

Draft

1.8 m

Call sign

WDG4245

Official No.

963071

AIS reports

Jon S is an American 11.6-metre commercial fishing boat. Her hull carries a 3.8-metre beam and a draft of 1.8 m. She's on record as MMSI 367534510, call sign WDG4245. Jon S can join the Master's Mate Safety Initiative Network free, for live AIS, weather, and a network of boats ready to help when it counts.

Free forever · No credit card · for working captains

Know where the fleet is. Get Jon S 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 Jon S 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 Jon S 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 Jon S and switch it all on

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About Jon S

What kind of vessel is Jon S?

Jon S is a Commercial Fishing Vessel flagged to United States of America.

What is Jon S's MMSI?

Jon S's MMSI is 367534510. Call sign WDG4245.

How big is Jon S?

Jon S is about 11.6 m long, 3.8 m on the beam, drawing 1.8 m.

Is Jon S on the Master's Mate Safety Initiative Network?

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