Could navies with 55-degree heavy-gun elevation use time-on-target fire?
Short answerProbably not with the available technology, though they could make long-range plunging fire much more dangerous.
NotesRaising heavy guns to 55 degrees would not by itself provide the technology for time-on-target missions. With suitable fire control, it could still enable effective long-range plunging fire. The extra ballistic reach and the coordination needed for simultaneous arrivals are separate capabilities.