U.S. Official No. 1354301
Not yet on Master's MateLIEUTENANT is an American working craft — 7.9 metres overall. She has 4.9 metres in the beam and a draft of 1.7 m. Officially she's U.S. official number 1354301. Working vessels like LIEUTENANT are never truly alone on the Master's Mate Safety Initiative Network — free, with a fleet on watch.
Engine & systems telemetry, live AIS, weather and distress alerting for the vessels that earn their keep.
Rig her out — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Joining the Safety Initiative Network doesn't just put LIEUTENANT on the map. It hands you the full bridge:
© 2026 Master’s Mate. All rights reserved.