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

ROCK BOTTOM

U.S. Official No. 1328245

Not yet on Master's Mate

Type

Recreational

Flag

USA

Length

12.1 m

Beam

3.5 m

Draft

1.8 m

Hull ID

YFY39212F223

First reported

Jun 2026

AIS reports

ROCK BOTTOM is an American recreational boat — 12.1 metres overall. She's built with a 3.5 m beam and a 1.8 m draft. Look for U.S. official number 1328245. Give ROCK BOTTOM the backing of the Master's Mate Safety Initiative Network — free, and a fleet that has her back.

Free forever · No credit card · for recreational captains

Keep ROCK BOTTOM 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 ROCK BOTTOM 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 ROCK BOTTOM 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 ROCK BOTTOM and switch it all on

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

Claim free → unlock everything

About ROCK BOTTOM

What kind of vessel is ROCK BOTTOM?

ROCK BOTTOM is a Recreational flagged to United States of America.

What is ROCK BOTTOM's U.S. Official No.?

ROCK BOTTOM's U.S. Official No. is 1328245.

How big is ROCK BOTTOM?

ROCK BOTTOM is about 12.1 m long, 3.5 m on the beam, drawing 1.8 m.

Is ROCK BOTTOM on the Master's Mate Safety Initiative Network?

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