Cruisers and smaller ships at Royal William Yard

What kinds of Royal Navy warships would normally be seen beside Royal William Yard in Plymouth during the mid-to-late 1920s?

Mostly cruisers and smaller ships; battleships generally used the larger upriver facilities or anchorages, with occasional exceptions possible.

This is a general dockyard pattern rather than an absolute rule. Capital ships were more likely to lie off Drake's Island or proceed toward the major maintenance docks, although an unusual berth assignment could still put a battleship where surviving photographs make it look unexpected.