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.

Recreational

GREENSTONE

MMSI 367026340 · Call sign WCZ6448

Not yet on Master's Mate

Type

Recreational

Flag

USA

Length

12.7 m

Beam

4.1 m

Draft

2.2 m

Call sign

WCZ6448

Official No.

687263

AIS reports

On the American registry, GREENSTONE is a 12.7-metre pleasure craft. GREENSTONE has a beam of 4.1 m and a 2.2-metre draft. Find her under MMSI 367026340, call sign WCZ6448. Put GREENSTONE on the Master's Mate Safety Initiative Network — free to claim, with a whole fleet watching out for her.

Free forever · No credit card · for recreational captains

Keep GREENSTONE looked after — even when you’re not aboard.

Anchor alarms that wake you, a live camera at the dock, and weather you can trust before every run.

Look after her — claim free →

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

Wherever GREENSTONE 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 recreational captains

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

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

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.

Weather & Routing

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

Worldwide Charts

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

Systems Monitoring

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

Live AIS & Traffic

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

Distress Mesh

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

Hail Any Captain

A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.

Claim GREENSTONE and switch it all on

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

Claim free → unlock everything

About GREENSTONE

What kind of vessel is GREENSTONE?

GREENSTONE is a Recreational flagged to United States of America.

What is GREENSTONE's MMSI?

GREENSTONE's MMSI is 367026340. Call sign WCZ6448.

How big is GREENSTONE?

GREENSTONE is about 12.7 m long, 4.1 m on the beam, drawing 2.2 m.

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

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