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

4 OUR WALLS

U.S. Official No. 906665

Not yet on Master's Mate

Type

Recreational

Flag

USA

Length

9.8 m

Beam

3.7 m

Draft

1.8 m

Hull ID

CDRN5028I687

First reported

Jun 2026

AIS reports

4 OUR WALLS is a family boat sailing under the American flag, 9.8 metres from stem to stern. She carries a 3.7 m beam and a 1.8-metre draft. She's on record as U.S. official number 906665. 4 OUR WALLS can join the Master's Mate Safety Initiative Network for free: think of it as a watch network that has every boat's back.

Free forever · No credit card · for recreational captains

Keep 4 OUR WALLS 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 4 OUR WALLS 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 4 OUR WALLS 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 4 OUR WALLS and switch it all on

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

Claim free → unlock everything

About 4 OUR WALLS

What kind of vessel is 4 OUR WALLS?

4 OUR WALLS is a Recreational flagged to United States of America.

What is 4 OUR WALLS's U.S. Official No.?

4 OUR WALLS's U.S. Official No. is 906665.

How big is 4 OUR WALLS?

4 OUR WALLS is about 9.8 m long, 3.7 m on the beam, drawing 1.8 m.

Is 4 OUR WALLS on the Master's Mate Safety Initiative Network?

Not yet. If 4 OUR WALLS is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).