Originally posted by parador
Is there a minimum beam for mounting triple 8" turrets ?
It can be hard to decide what the "Minimum" needed is. Historical examples can provide some guidance, but could also indicate a pushed design.
The IJN Aoba and Furataka mount 8" twins on 52ft, which seems about the least, while the HMS Exeter used a 58ft beam for twins.
The USS Pensacola class with a 65ft beam mounted twin 8" in "A" and triple in "B" and I have seen the reason given as that the beam at "A" was insufficient for triples... yet there are triple 8" cruisers with smaller beams, so hull form also matters.
In this case, you have a very narrow hull with a moderate BC, twins are likely what fit.