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.
Passenger (Uninspected)
REEF BOBBER IV
U.S. Official No. 984398
Not yet on Master's MateType
Passenger (Uninspected)
Flag
USALength
8.5 m
Beam
3.5 m
Draft
1.4 m
First reported
Jun 2026
AIS reports
1
On the American registry, REEF BOBBER IV is an 8.5-metre passenger craft. She has a 3.5 m beam and a draft measuring 1.4 metres. Find her under U.S. official number 984398. Claim REEF BOBBER IV free on the Master's Mate Safety Initiative Network and let nearby cruisers have her back.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard REEF BOBBER IV safe.
Distress alerting, live AIS, onboard monitoring and weather routing — the safety stack for boats that carry people.
Switch on the safety stack — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever REEF BOBBER IV 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 passenger & charter operators
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put REEF BOBBER IV on the map. It hands you the full bridge:
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
Live AIS & Traffic
See every vessel around you in real time. Closest-approach warnings before they matter.
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Anchor Watch
GPS-precise drag alarms that actually wake you — and your whole crew. Sleep through the night.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
Onboard Cameras
Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.
Hail Any Captain
A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.
Claim REEF BOBBER IV and switch it all on
Free to join · nothing to install to start · cancel anytime
About REEF BOBBER IV
What kind of vessel is REEF BOBBER IV?
REEF BOBBER IV is a Passenger (Uninspected) flagged to United States of America.
What is REEF BOBBER IV's U.S. Official No.?
REEF BOBBER IV's U.S. Official No. is 984398.
How big is REEF BOBBER IV?
REEF BOBBER IV is about 8.5 m long, 3.5 m on the beam, drawing 1.4 m.
Is REEF BOBBER IV on the Master's Mate Safety Initiative Network?
Not yet. If REEF BOBBER IV is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
© 2026 Master’s Mate. All rights reserved.