41. One of her new techniques, the use of airborne surveillance, presaged modern hunter-killer antisubmarine warfare . 42. For the next twelve years, was primarily engaged in testing and evaluating sonar equipment and antisubmarine warfare weapons. 43. Otherwise, she cruised along the eastern seaboard and in the West Indies conducting training particularly in antisubmarine warfare . 44. Her sinking of six Japanese submarines in twelve days is a feat unparalleled in the history of antisubmarine warfare . 45. Navies use a variety of acoustic systems, especially passive, in antisubmarine warfare , both tactical and strategic. 46. She arrived the next day for duty with TG 27.1, training new escort vessels in antisubmarine warfare . 47. During 1959 she served with Task Force " Alfa, " concentrating on the development of improved antisubmarine warfare techniques. 48. There, her duties included services to aircraft and surface ships to help them hone their skills in antisubmarine warfare . 49. Emphasis in antisubmarine warfare resulted in " Spinax " s being converted to a Fleet Snorkel submarine. 50. After an eight-day refit, she provided services as a target for destroyer / antisubmarine warfare training exercises.
