MMSI 367036430 · Call sign WSF6691
Not yet on Master's MateJOHN R ASHER is an American 21-metre service vessel. She's built with a beam of 6.1 m and a 2.4 m draft. Her registration reads MMSI 367036430, call sign WSF6691. JOHN R ASHER is invited to the free Master's Mate Safety Initiative Network, where cruisers keep each other safe.
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 JOHN R ASHER on the map. It hands you the full bridge:
© 2026 Master’s Mate. All rights reserved.