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 Island III
MMSI 368173510 · Call sign WDL8850
Not yet on Master's MateType
Recreational
Flag
USALength
16.3 m
Beam
4.6 m
Draft
2.2 m
Call sign
WDL8850
Official No.
1137429
Hull ID
CDRK2286J203
AIS reports
1
Rock Island III, a recreational boat on the the United States registry, measures 16.3 metres on deck. She carries a 4.6-metre beam and a 2.2-metre draft. Officially she's MMSI 368173510, call sign WDL8850. Put Rock Island III 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 Rock Island III 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 Island III 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 Island III 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 Island III and switch it all on
Free to join · nothing to install to start · cancel anytime
About Rock Island III
What kind of vessel is Rock Island III?
Rock Island III is a Recreational flagged to United States of America.
What is Rock Island III's MMSI?
Rock Island III's MMSI is 368173510. Call sign WDL8850.
How big is Rock Island III?
Rock Island III is about 16.3 m long, 4.6 m on the beam, drawing 2.2 m.
Is Rock Island III on the Master's Mate Safety Initiative Network?
Not yet. If Rock Island III is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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