MMSI 367344210 · Call sign WDG4829
Not yet on Master's MateWinslow C. Kelsey flies the American flag — a 26.5-metre service vessel. She's built with 10.5 metres in the beam and a 4.1 m draft. Find her under MMSI 367344210, call sign WDG4829, IMO 8601159. Winslow C. Kelsey is welcome on the Master's Mate Safety Initiative Network — a free, community-run watch where boats look out for one another.
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 Winslow C. Kelsey on the map. It hands you the full bridge:
© 2026 Master’s Mate. All rights reserved.