MMSI 205563490 · Call sign OT5634
Not yet on Master's MateOn the Belgian registry, RIVER DRONE 4 is a 106-metre cargo ship. She's built with a 12 m beam and a 3 m draft. Officially she's MMSI 205563490, call sign OT5634. RIVER DRONE 4 can join the Master's Mate Safety Initiative Network for free: think of it as a watch network that has every boat's back.
Real-time AIS, full systems telemetry, distress alerting and worldwide charts — your hull on one dashboard, from anywhere.
Put her on the dashboard — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Joining the Safety Initiative Network doesn't just put RIVER DRONE 4 on the map. It hands you the full bridge:
© 2026 Master’s Mate. All rights reserved.