31. Like most corvettes, " Fredericton " was installed with a Type 123A ASDIC detection system. 32. Like most corvettes, " Timmins " was installed with a Type 123A ASDIC detection system. 33. In 1955 she was disarmed for service at Portland for use as the ASDIC trials and training ship. 34. At the start of World War II, British ASDIC technology was transferred for free to the United States. 35. She was fitted with an ASDIC set to detect submarines by reflections from sound waves beamed into the water. 36. Lonsdale took an evasive course, and used the Asdic to identify when the trawlers were stopping to listen. 37. She was in reserve at the Nore in 1919, but was modified to conduct radio and Asdic trials. 38. Picked up on ASDIC by " Walker ", she was depth-charged and severely damaged. 39. It may help with your search to know that during WWII the British usually referred to Sonar as ASDIC . 40. She had a British Type 123 ASDIC installed in March and was fitted with degaussing equipment the following month.
