The attack on the ship is discussed here. It is not clear there were any casualties as the ship was at anchor and was apparently empty:
https://salegion.org.uk/ss-giulio-cesare/
The attack on the power station is discussed here, with the pilot and navigator identified:
Pilot: Cyril Reginald "Rusty" Russell
Navigator: Lt G W Stanbury, both in Belgrade Commonwealth Cemetery.
http://saafww2pilots.yolasite.com/rusty-russell.php