What were the advantages and disadvantages of Gangut-style minimal superstructures, and why did the layout fade after the 1920s?
Short answerThe low profile reduced exposed structure and suited Baltic service, but sacrificed the height, working space, and command facilities needed for longer-range and more global operations.
NotesGangut's minimal superstructure reflected Russian concern about exposed structures burning or being shot away during the Russo-Japanese War. The layout also suited ships intended for the Baltic. Taller observation positions became valuable because visual spotting and targeting depended on seeing farther over the horizon. Operations farther afield also required working space for crews, admirals and their staffs. Those demands help explain why later battleships developed larger superstructures.