In August 1960, USS Volador (SS-490) was assigned as a target submarine for the USS Kingfor the testing the new ASROC MK-44 torpedo system. While at periscope depth and being tracked by USS King's SQS-23B sonar, King fired an ASROC. The MK-44 torpedo separated from the rocket motor hit the Volador's sail after entering the water, leaving a hole in its sail.