Propeller Shaft Bracket

Hi Guys,
We have recently mounted the bracket of our boat on the hull but it seems a bit big for me.Is there anyone who knows something about the size of the brackets?I mean I am afraid it is going to disturb the flow before the propeller and ithe prop. will come across with the turbulence flow regime.

Any helps would be appreciated

Cheers

 

Tumer Berk,
This would be a good place to start:
Professional Boatbuilder, issue 72, Aug/Sep, 2001, "Drivetrain Fundamentals," page 46.
And Look at the ABYC P-6

 

Tumer Berk,
have you checked any classification society criteria?
You can do it freely, for instance in http://www.gl-group.com/infoServices/rules/pdfs/english/glrp-e.pdf or the part you are looking for http://www.gl-group.com/infoServices/rules/pdfs/english/schiffst/teil-3/kap-3/englisch/abschn01.pdf