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)

EXPLORER

MMSI 367663190 · Call sign WDQ4189

Not yet on Master's Mate

Type

Passenger (Inspected)

Flag

USA

Length

9.2 m

Beam

3 m

Draft

1 m

Call sign

WDQ4189

Official No.

1172058

Hull ID

SBK3VVXXJ405

AIS reports

On the American registry, EXPLORER is a 9.2-metre ferry vessel. She has a beam of 3 m and a draft of 1 m. Officially she's MMSI 367663190, call sign WDQ4189. For a boat that carries people, EXPLORER 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 EXPLORER 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 EXPLORER 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 EXPLORER 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 EXPLORER and switch it all on

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

Claim free → unlock everything

About EXPLORER

What kind of vessel is EXPLORER?

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

What is EXPLORER's MMSI?

EXPLORER's MMSI is 367663190. Call sign WDQ4189.

How big is EXPLORER?

EXPLORER is about 9.2 m long, 3 m on the beam, drawing 1 m.

Is EXPLORER on the Master's Mate Safety Initiative Network?

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