“U 264″ remained submerged for some time after her contact with the convoy. At about noon on 19th February, she came to a depth of about 20 m. (65 ft.) in order to signal Control. She was then discovered by a group of destroyers which immediately began a prolonged attack. The U-Boat immediately submerged to a greater depth and, taking evasive action, released several S.B.T. charges. She was unable to shake off her pursuers and depth-charges continued to rain down on her.