MMSI 247353700 · Call sign IBCX
Not yet on Master's MateCOSTA DIADEMA is an Italian passenger ship, 304 metres on deck. Below, she has a beam measuring 50 metres and a draft measuring 8.5 metres. Her registration reads MMSI 247353700, call sign IBCX, IMO 9636888. There's a place for COSTA DIADEMA on the Master's Mate Safety Initiative Network — free, community-driven, like AAA for the ocean.
Distress alerting, live AIS, onboard monitoring and weather routing — the safety stack for boats that carry people.
Switch on the safety stack — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Joining the Safety Initiative Network doesn't just put COSTA DIADEMA on the map. It hands you the full bridge:
© 2026 Master’s Mate. All rights reserved.