Was HMS Incomparable only at the research stage?
Short answerIt was still a concept in Jackie Fisher's thinking, and a developed design probably would not have retained the 20-inch guns.
NotesHMS Incomparable had not reached a mature design stage. It remained a concept within Jackie Fisher's thinking, so its stated characteristics should not be treated as a final specification. Any serious development would probably have altered the ship. The 20-inch guns, in particular, were unlikely to survive that process unchanged.