MMSI 367534450 · Call sign WDG4239
Not yet on Master's MateVivian, an American commercial fishing vessel, measures 8.7 metres on deck. She carries a 3.2 m beam and a 1.2-metre draft. Find her under MMSI 367534450, call sign WDG4239. Vivian is welcome on the Master's Mate Safety Initiative Network — a free, community-run watch where boats look out for one another.
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 Vivian on the map. It hands you the full bridge:
© 2026 Master’s Mate. All rights reserved.