Detecting and destroying German U-boats was a challenge. To make this task easier, the Allies employed a new technology that sends out sound waves to determine the range and direction of a submerged U-boat. The British called this technology "ASDIC" while the Americans called it "_____."
Answer SONAR
ASDIC/Sonar gave naval ships the ability to locate and track the sneaky U-boats, negating some of the stealth advantage the U-boats had under the water.
Asked by Riley Schmidt · Last updated 2 years ago · 28K views · SOURCE