Detection is followed by attack Here depth charges remain the most effective weapon, The hunting ships drop a barrage of them all round the known position of the enemy. Every destroyer in war-time would carry between forty and fifty—the smaller vessels between twenty and thirty, There is 300lbs of explosive in ihe charge, and it can be detonated at any prearranged depth. The barrage, therefore, would burst ahead and astern, above and below the submarine, so that she could not successfully dive out of its range.
Text read from the printed page and cleaned; old type leaves the occasional error.