As we have come to expect from you Jon....very nice Work!!
Hope you don't mind if I answer Chris's question regarding his T23.
Chris, you have your props correctly fitted if turning Outboard when going ahead. This is in common with several other classes of RN Ships also fitted with fixed pitch propellers. Whitby/Rothesay, Type 41/61 and Leander Class Frigates. County and Type 82 Destroyer, Invincible Class Carriers.
Two pictures of T23's, one with the original 'petal' bladed design (Iron Duke). One with the later skewed design (Sutherland).
Hope that puts your mind at ease.
Nige