I consider doing a submarine rescue ship for my AU and being between two designs:
1) convectional layout with an A-frame at stern
2) Middle crane like Japanese Chijoda and Chiyaya and well for the DSRV
Question is if a ship of second layout could be built with crane for a 55 ton DSRV (derivative of Swedish URF). Japanese DSRV and US Mystic one weighs 40 and 38 tons respectively.