U.S. Official No. 635390
Not yet on Master's MateCHEYENNE is an American 78-metre tanker. Her hull carries a beam measuring 16.2 metres and a draft measuring 4.2 metres. On the registers she's U.S. official number 635390. It's free to add CHEYENNE to the Master's Mate Safety Initiative Network — like AAA for the ocean, run by the cruisers who use it.
Real-time AIS, full systems telemetry, distress alerting and worldwide charts — your hull on one dashboard, from anywhere.
Put her on the dashboard — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Joining the Safety Initiative Network doesn't just put CHEYENNE on the map. It hands you the full bridge:
© 2026 Master’s Mate. All rights reserved.