U.S. Official No. 528998
Not yet on Master's MateTEMPEST, an American fishing craft, measures 11.9 metres on deck. She has a 3.7-metre beam and a draft of 1 m. Her papers read U.S. official number 528998. Add TEMPEST to the Master's Mate Safety Initiative Network — free to join, and the fleet keeps an eye out for each other.
Live AIS traffic, weather you can plan around, engine & systems telemetry, and a distress mesh that reaches nearby boats.
Keep the fleet in sight — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Joining the Safety Initiative Network doesn't just put TEMPEST on the map. It hands you the full bridge:
© 2026 Master’s Mate. All rights reserved.