raw water pump seal

[Croatian Sailing]

Fixed, tightened a couple screws 

[Yngmar]

Can't tell where it's coming from, as there's oil everywhere! Grab a roll of paper towels, clean up the engine and start it. Keep wiping as the engine runs, following gravity upwards to find where it's actually leaving the engine.

[Petef]

Yngmar is right there's a lot of oil. Clean it up, it'll help you trace it when you next run the engine. To me (not an expert) it looks like the raw water pump oil seal. If it is, it is a relatively simple fix compared to other leaking oil fixes that it might be. 

[Yngmar]

I see oil leaks from well above the level of the sump. Suggest you investigate upwards from there! Might well be the oil seal on the raw water pump.

Photo rotated and enhanced a bit to see the leaks better.

[Yngmar]

I'd think so! 

[geoff]

Most probably the O ring nicked ,[happened  to me] Geoff