FleurDeLYS - criminalisation is a massive topic in shipping industry, and has been for the last decade. Sailors are far more exposed to local whims than pilots are. Google the case of the Hebei Spirit in S Korea for one example.
Costa Concordia is a more difficult example, and I suspect even in the UK the Captain would have been tried for manslaughter. Both the CAA and the MCA have tried manslaughter prosecutions in accidents of late (Ouzo/Pride of Bilbao and Tiger Moth accident in he SW) but UK juries seem very unwilling to convict.