U.S. Official No. 263577
Not yet on Master's MatePEN 47 is an American commercial trawler — 8.7 metres overall. She carries 3.1 metres in the beam and a 1.2-metre draft. She's on record as U.S. official number 263577. PEN 47 is invited to the free Master's Mate Safety Initiative Network, where cruisers keep each other safe.
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 PEN 47 on the map. It hands you the full bridge:
© 2026 Master’s Mate. All rights reserved.