Possible Clues:

• Container containing a small container
• Land drained by a river
• Round open dish, as for washing
• Bowl with what's wrong to a degree
• Bowl like this and it would be 32 across for a graduate, it seems
• Where to wash up
• Water receptacle
• Dock - vessel
• Perhaps the graduate is in to bowl
• Seems that the graduate is quite at home with that dish (5)