Jagged edges when rendering

unhandled

#1

I am getting jagged edges on some edges when I render. Please see attached image. I have the render settings as suggested in the tutorial, but it makes no difference. The render was a PNG (the attached file is a jpeg) with 300 passes.

On the following image take a look at the edge of the hull and fins and the line between the blue and while sections of the fins.

Suggestions anyone?

Thanks,

Paul