U.S. Official No. 1310830
Not yet on Master's MateBIG KAHUNA, an American passenger vessel, measures 10.9 metres on deck. She's built with a 3.6 m beam and a 1.2 m draft. Look for U.S. official number 1310830. It's free to add BIG KAHUNA to the Master's Mate Safety Initiative Network — like AAA for the ocean, run by the cruisers who use it.
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
Joining the Safety Initiative Network doesn't just put BIG KAHUNA on the map. It hands you the full bridge:
© 2026 Master’s Mate. All rights reserved.