Actually--if I recall correctly--the England sank 6 subs in 12 days. The primary weapon they used was Hedgehog. They were part of a Hunter-Killer group that just happened to be vectored up a Japanese submarine scouting line (not unusual for the Japanese to use subs this ways). At one point the England had to get more ammo.
when the last sub was encoutered England was ordered to stand off so the other DE's could have a chance. After a while the group received orders to move on (I think there was a weather front moving in which threatened the small ships). The order was given "Oh hell. Go ahead England!" 1 or 2 hedgehog salvos later it was over.
USS England: Buckley Class--Hedgehog, 8 KGun DC Launchers, Hedgehog (10 full salvos typical), 300ib teardrop depth charges (120 typical), Type 147 Sword Sonar, SJ Radar.
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