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 (Inspected)
BIG 3 NO. 4
U.S. Official No. 654160
Not yet on Master's MateType
Passenger (Inspected)
Flag
USALength
11.7 m
Beam
4.3 m
Draft
1.9 m
First reported
Jun 2026
AIS reports
1
BIG 3 NO. 4, an American passenger vessel, measures 11.7 metres on deck. She carries a 4.3-metre beam and a 1.9 m draft. Look for U.S. official number 654160. Add BIG 3 NO. 4 to the Master's Mate Safety Initiative Network — free to join, and the fleet keeps an eye out for each other.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard BIG 3 NO. 4 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 BIG 3 NO. 4 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 BIG 3 NO. 4 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 BIG 3 NO. 4 and switch it all on
Free to join · nothing to install to start · cancel anytime
About BIG 3 NO. 4
What kind of vessel is BIG 3 NO. 4?
BIG 3 NO. 4 is a Passenger (Inspected) flagged to United States of America.
What is BIG 3 NO. 4's U.S. Official No.?
BIG 3 NO. 4's U.S. Official No. is 654160.
How big is BIG 3 NO. 4?
BIG 3 NO. 4 is about 11.7 m long, 4.3 m on the beam, drawing 1.9 m.
Is BIG 3 NO. 4 on the Master's Mate Safety Initiative Network?
Not yet. If BIG 3 NO. 4 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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