So these wash ports then. The hull cast markings would have you believe that these are not particularly high. I've cut mine out bigger than suggested but when comparing to the actually vessel they are still no where near big enough.
Looking at photographs I estimate a washport equals 25% of the bulwark height which would equate to 7.5mm on mine.
Here they're at about 6mm but I think they'd look better BIGGER. What do you think?????????
The bulwark benefits from better rigidity because of the styrene so I don't think strength will be compromised.