MMSI 366973990 · Call sign WDB9340
Not yet on Master's MateOut of the United States, Robert Greene is a 41.3-metre harbour workboat. Her hull carries a beam of 14 m and a draft of 3.4 m. Officially she's MMSI 366973990, call sign WDB9340. There's a place for Robert Greene on the Master's Mate Safety Initiative Network — free, community-driven, like AAA for the ocean.
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 Robert Greene on the map. It hands you the full bridge:
© 2026 Master’s Mate. All rights reserved.