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.

Passenger (Inspected)

JOHN JACOB

MMSI 367602540 · Call sign WDH2922

Not yet on Master's Mate

Type

Passenger (Inspected)

Flag

USA

Length

57.7 m

Beam

9.8 m

Draft

4.1 m

Call sign

WDH2922

IMO

9732280

Official No.

1246043

AIS reports

JOHN JACOB is an American passenger ferry, 57.7 metres long. Her hull carries 9.8 metres in the beam and a draft of 4.1 m. On the registers she's MMSI 367602540, call sign WDH2922, IMO 9732280. JOHN JACOB carries passengers; the free Master's Mate Safety Initiative Network helps carry the watch, with distress alerting and a network nearby.

Free forever · No credit card · for passenger & charter operators

Keep every soul aboard JOHN JACOB safe.

Distress alerting, live AIS, onboard monitoring and weather routing — the safety stack for boats that carry people.

Switch on the safety stack — free →

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

Wherever JOHN JACOB 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 passenger & charter operators

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

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

Distress Mesh

Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.

Live AIS & Traffic

See every vessel around you in real time. Closest-approach warnings before they matter.

Systems Monitoring

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

Weather & Routing

GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.

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 JOHN JACOB and switch it all on

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

Claim free → unlock everything

About JOHN JACOB

What kind of vessel is JOHN JACOB?

JOHN JACOB is a Passenger (Inspected) flagged to United States of America.

What is JOHN JACOB's MMSI?

JOHN JACOB's MMSI is 367602540. Call sign WDH2922. IMO 9732280.

How big is JOHN JACOB?

JOHN JACOB is about 57.7 m long, 9.8 m on the beam, drawing 4.1 m.

Is JOHN JACOB on the Master's Mate Safety Initiative Network?

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