 Mines damaged three minesweepers, the tug, , and a subchaser.Again sweeping in company with Eider, "Auk" hit a mine at 0925 that detonated another mine off her starboard bow in a chain reaction; there was also a third explosion (probably caused by the second) 30 yards astern, carrying away the sweep and resulting in the loss of a "kite" and of wire.At 1000, an upper level mine exploded beneath ("Minesweeper No.