What exactly is a coastal battleship?
Short answerA short-range, slow, heavily armed and armoured ship built to deter stronger fleets near its own coast.
NotesCoastal battleships combine large guns and heavy armour with short range and relatively low speed. Their smaller size makes them cheaper than battleships intended for the high seas. These tradeoffs suit defence near home waters. Long ocean passages are outside the role for which that combination is intended.