How available equipment narrowed the Renown design

What alternative Renown-class battlecruiser designs were considered, and how would they have differed?

There were few developed alternatives because available equipment drove a rapid design decision. A four-twin-turret option is recalled tentatively, and a third ship would probably have differed as a second batch.

The Renown design settled quickly because the ships were intended to use equipment already available or under construction. A four-twin-turret arrangement is recalled tentatively as a possibility that was considered. The practical choice favoured getting ships built with existing production. A third Renown would probably have belonged to a revised second batch, with some differences from the original pair.