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
FIVE-O ON THE H2O
U.S. Official No. 1156427
Not yet on Master's MateType
Recreational
Flag
USALength
8.9 m
Beam
2.9 m
Draft
1.5 m
Hull ID
SERT2834F304
First reported
Jun 2026
AIS reports
1
Registered in the United States, FIVE-O ON THE H2O is an 8.9-metre recreational boat. FIVE-O ON THE H2O has a beam of 2.9 m and a 1.5 m draft. Her registration reads U.S. official number 1156427. Whether she's at the dock or out for the weekend, FIVE-O ON THE H2O is covered by the free Master's Mate Safety Initiative Network — alarms, weather, and a watching fleet.
Free forever · No credit card · for recreational captains
Keep FIVE-O ON THE H2O 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 FIVE-O ON THE H2O 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 FIVE-O ON THE H2O 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 FIVE-O ON THE H2O and switch it all on
Free to join · nothing to install to start · cancel anytime
About FIVE-O ON THE H2O
What kind of vessel is FIVE-O ON THE H2O?
FIVE-O ON THE H2O is a Recreational flagged to United States of America.
What is FIVE-O ON THE H2O's U.S. Official No.?
FIVE-O ON THE H2O's U.S. Official No. is 1156427.
How big is FIVE-O ON THE H2O?
FIVE-O ON THE H2O is about 8.9 m long, 2.9 m on the beam, drawing 1.5 m.
Is FIVE-O ON THE H2O on the Master's Mate Safety Initiative Network?
Not yet. If FIVE-O ON THE H2O is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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