Although the Royal Navy could not bring the whole of its naval superiority to bear—as most of the fleet was engaged in the Atlantic and Mediterranean, and a substantial proportion had been detached to support Operation Menace against Dakar—the British Home Fleet still had a very large advantage in numbers. It was debatable whether British ships were as vulnerable to enemy air attack as the Germans hoped. During the Dunkirk evacuation, few warships were actually sunk, despite being stationary targets. The overall disparity between the opposing naval forces made the amphibious invasion plan extremely risky, regardless of the outcome in the air. In addition, the "Kriegsmarine" had allocated its few remaining larger and more modern ships to diversionary operations in the North Sea.