MMSI 367550510 · Call sign WDG5809
Not yet on Master's MateAn American harbour workboat, Alex Piehet measures 26.5 metres. Below, she has a beam of 9.8 m and a draft of 3 m. Find her under MMSI 367550510, call sign WDG5809. Working vessels like Alex Piehet 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 Alex Piehet on the map. It hands you the full bridge:
© 2026 Master’s Mate. All rights reserved.