Five ships sunk by aircraft on 21/04/1941

Does anyone know :

british BANKURA 3185/12 at Tobruk
- Captain

british (ex greek) URANIA 1953/02 also at Tobruk
- Manager company
- Captain
- casualties

greek ARCHON 1364/21 at Euboea
greek ESPEROS (used as hospital ship) 1461/18 off Missolonghi
greek IONNA 1192/01 at Patras
- Captains
- casualties

and for these five ships, aircraft units involved

Many thanks and best regards

JEAN MICHEL