Dive bombers. The monoplane Blackburn Skua two-man fighter-dive bomber was introduced in late 1938. It sank the German cruiser "Königsbergsaw" during the German invasion of Norway. This was the first major warship sunk by a dive bomber in combat. Skuas provided air cover during the Dunkirk evacuation and served in the Mediterranean. Like the Roc, however, they fared poorly against the Messerschmitt Bf 109, and were withdrawn from front line service during 1941.