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.

Oil Recovery

RESPONDER

MMSI 367345810 · Call sign WCY4172

Not yet on Master's Mate

Type

Oil Recovery

Flag

USA

Length

51.2 m

Beam

12.2 m

Draft

3.7 m

Call sign

WCY4172

Official No.

515337

AIS reports

RESPONDER, an American cargo vessel, measures 51.2 metres on deck. She's built with 12.2 metres in the beam and a 3.7-metre draft. Her registration reads MMSI 367345810, call sign WCY4172. Give RESPONDER the backing of the Master's Mate Safety Initiative Network — free, and a fleet that has her back.

Free forever · No credit card · for commercial operators

Eyes on RESPONDER, around the clock.

Real-time AIS, full systems telemetry, distress alerting and worldwide charts — your hull on one dashboard, from anywhere.

Put her on the dashboard — free →

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

Wherever RESPONDER 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 commercial operators

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

Joining the Safety Initiative Network doesn't just put RESPONDER 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.

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.

Worldwide Charts

Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.

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.

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 RESPONDER and switch it all on

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

Claim free → unlock everything

About RESPONDER

What kind of vessel is RESPONDER?

RESPONDER is a Oil Recovery flagged to United States of America.

What is RESPONDER's MMSI?

RESPONDER's MMSI is 367345810. Call sign WCY4172.

How big is RESPONDER?

RESPONDER is about 51.2 m long, 12.2 m on the beam, drawing 3.7 m.

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

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