Hi Michael,

> Well, from your screenshot it looked like there were
> some different flipped parts along the hull. When things
> are joined they should all get a consistent direction, so
> it seemed like some of those parts were possibly not
> joined with one another?

I checked my model and I do believe you are correct Michael (should I have doubted it?). There appears to be some face wierdness going on as I think I have some faces sitting directly on top of each other. I rebuilt some curves and may have created some duplicates at that stage. I also thought my model was fully joined but I don't think it is. It was... some time before I booleaned the torpedo belt to the hull.

I'll go back to the hull without torpedo belt and see what I get.