Since the advent of practical anti-ship missile technology, pioneered in World War II with the MCLOS-guided Fritz X as early as 1943, aerial torpedoes have largely been reduced to use in anti-submarine warfare. Missiles are generally much faster, with longer range, and without the same launch altitude limitation of aerial torpedoes. Some modern aerial anti-submarine torpedoes do have the necessary guidance capability to engage surface vessels, though given the widespread availability of missiles on aircraft and the small, specialized warhead on anti-submarine aerial torpedoes, this is not an option normally considered.