''An extremely excellent heavy cruiser main gun with a length of 55<ref>The original 20.3s had a length of 50. This means the barrel length was 10.15m (20.3x50). The no.3 had a longer barrel of 11.165m (20.3x55).</ref> was made.''<br> | ''An extremely excellent heavy cruiser main gun with a length of 55<ref>The original 20.3s had a length of 50. This means the barrel length was 10.15m (20.3x50). The no.3 had a longer barrel of 11.165m (20.3x55).</ref> was made.''<br> |