It looked for all the world like a gun, but I missinterperated the saluting gun to be some valve assembly since all of the other open mounts are behind shields.
The little gun midships is a 3" HA, But I put a shield on it since my reference drawing had one.
I fixed the ladder on "B"turret . . .
Don'tknow how it got screwed up.
Well here she is HMS Renown As Built, 1916: