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 SEA LU
U.S. Official No. 1138398
Not yet on Master's MateType
Recreational
Flag
USALength
12.8 m
Beam
4.1 m
Draft
2.1 m
Hull ID
CDRW0020K001
First reported
Jun 2026
AIS reports
1
On the American registry, ROCK SEA LU is a 12.8-metre pleasure boat. She has a beam of 4.1 m and a draft measuring 2.1 metres. On the registers she's U.S. official number 1138398. The Master's Mate Safety Initiative Network welcomes ROCK SEA LU — free to join, cruiser-run, and always on watch.
Free forever · No credit card · for recreational captains
Keep ROCK SEA LU 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 SEA LU 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 SEA LU 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 SEA LU and switch it all on
Free to join · nothing to install to start · cancel anytime
About ROCK SEA LU
What kind of vessel is ROCK SEA LU?
ROCK SEA LU is a Recreational flagged to United States of America.
What is ROCK SEA LU's U.S. Official No.?
ROCK SEA LU's U.S. Official No. is 1138398.
How big is ROCK SEA LU?
ROCK SEA LU is about 12.8 m long, 4.1 m on the beam, drawing 2.1 m.
Is ROCK SEA LU on the Master's Mate Safety Initiative Network?
Not yet. If ROCK SEA LU is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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