Anti-submarine weapon
（重定向自Antisubmarine）
![A Hedgehog depth charge launcher.](/Images/godic/202412/21/Hedgehog_launcher2916.jpg")
![Mk. 17 depth bomb is being unloaded from a SOC Seagull scout plane on board the USS Philadelphia (CL-41) during an Atlantic U-boat sweep near Panama in June 1942.](/Images/godic/202412/21/Depth-bomb2916.jpg")
![Hedgehog, a 24-](/Images/godic/202412/21/Hedgehog_anti-submarine_mortar2916.jpg")
![The four principal methods of delivering an acoustic homing torpedo or a Nuclear Depth Bomb at long range from a surface escort. Only the rocket-thrown weapons (ASROC and Ikara) are available for use in all-weather conditions and at instant readiness.](/Images/godic/202412/21/ASROC-Ikara-LAMPS-MPA2916.png")
An anti-submarine weapon (ASW) is any one of a number of devices that are intended to act against a submarine and its crew, to destroy (sink) the vessel or reduce its capability as a weapon of war. In its simplest sense an anti-submarine weapon is usually a projectile, missile or bomb that is optimized to destroy submarines.