Were Tribal-class 4.7-inch guns through-deck mounts, and why did the Battle class use a different arrangement?
Short answerThe Tribals used upper-deck mounts. The Battle class received between-deck 4.5-inch mounts because the upper-deck version was not ready.
NotesTribal-class 4.7-inch guns used upper-deck mounts with gun shields. An upper-deck mount sits on top of the deck, while a between-deck mounting extends into the ship below. The Battle class used between-deck 4.5-inch mountings because the intended upper-deck version was not ready. The terminology needs its period and service attached, since naval usage changed over time.