背負い式砲塔
Sign in to savethumb|right|The two bow gun turrets on one of the first superfiring battleships, the Brazilian . They are "superfiring" because one has been mounted over the other, and can shoot over its top.
thumb|right|The two bow gun turrets on one of the first superfiring battleships, the Brazilian . They are "superfiring" because one has been mounted over the other, and can shoot over its top.