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)

POTOMAC TAXI IV

MMSI 368006290 · Call sign WDJ7393

Not yet on Master's Mate

Type

Passenger (Inspected)

Flag

USA

Length

26.3 m

Beam

6.3 m

Draft

2.3 m

Call sign

WDJ7393

Official No.

1280799

Hull ID

GAJ90P04H717

AIS reports

POTOMAC TAXI IV, an excursion vessel listed on the the United States registry, measures 26.3 metres on deck. She's built with a beam measuring 6.3 metres and a 2.3-metre draft. She's on record as MMSI 368006290, call sign WDJ7393. For a boat that carries people, POTOMAC TAXI IV can lean on the Master's Mate Safety Initiative Network — free distress alerting and a fleet that's paying attention.

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

Keep every soul aboard POTOMAC TAXI IV 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 POTOMAC TAXI IV 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 POTOMAC TAXI IV 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 POTOMAC TAXI IV and switch it all on

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

Claim free → unlock everything

About POTOMAC TAXI IV

What kind of vessel is POTOMAC TAXI IV?

POTOMAC TAXI IV is a Passenger (Inspected) flagged to United States of America.

What is POTOMAC TAXI IV's MMSI?

POTOMAC TAXI IV's MMSI is 368006290. Call sign WDJ7393.

How big is POTOMAC TAXI IV?

POTOMAC TAXI IV is about 26.3 m long, 6.3 m on the beam, drawing 2.3 m.

Is POTOMAC TAXI IV on the Master's Mate Safety Initiative Network?

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