MMSI 367712860 · Call sign WDI5873
Not yet on Master's MateCAROLYN H is an American 20-metre workboat. She carries a 7 m beam and a 2.2 m draft. On AIS she shows as MMSI 367712860, call sign WDI5873, IMO 8851053. Sign CAROLYN H up free to the Master's Mate Safety Initiative Network and join a fleet that looks after its own.
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 CAROLYN H on the map. It hands you the full bridge:
© 2026 Master’s Mate. All rights reserved.