If you want to create a legitimate CHD for a North American CD game:
Developed by Psychosis and published by Psygnosis, Shipwreckers! is a top-down, arcade-style action-adventure game where players control a pirate ship. Shipwreckers -USA-.chd
Contact the Video Game History Foundation or MAMEdev . They can verify the CHD and preserve it properly. If you want to create a legitimate CHD