second visit an Admiralty tug came along, hauled up the lightship’s anchors, and shifted her exactly one hundred yards east-north-east. You will note that the German submarine’s chosen spot was exactly one hundred yards west-south-west of the lightship’s old position. The change was so slight that it might be expected to escape notice. And so it did. Three days passed, and then at high tide the U boat came cheerfully along upon its mission and lay off the lightship exactly as before. The only difference was that now she was upon the top of the shoal with barely twelve feet under her at low water instead of twenty-two feet. The observers in the lightship winked at one another, for they had talked with the officer of the Admiralty tug and were wise to the game. The tide fell, the submarine lay peacefully on the bottom, and Fritz, intent to watch the movements of ships in and out of the harbour, did not notice that the water was steadily falling away from his sides and leaving his whole conning tower and deck exposed. Far away a destroyer was watching, and at the correct moment, when the water around the U boat was too shallow to float her even in the lightest trim, she slipped up as near as she could approach, trained a 4-inch gun upon Fritz and sent in an armed boat’s crew to wish him good-day. Poor old Fritz knew nothing of his visitors until they were hammering violently upon his fore hatch and calling upon him to come out and surrender. He was a very sick man and did not understand at all how he had been caught until the whole manœuvre had been kindly explained to him by the Lieutenant-Commander of the destroyer, from whom I also received the story. ‘You see, Fritz, old son,’ observed the Lieutenant-Commander, ‘Admiralty charts are jolly things and you know all about them, but you should sometimes check them with the lead. Things change, Fritz; light-ships can be moved. Come and have a drink, old friend, you look as if you needed something stiff.’ Fritz gulped down a tall whisky and soda, gasped, and gurgled out, ‘That was damned clever and I was a damned fool. For God’s sake don’t tell them in Germany how I was caught.’ ‘Not for worlds, old man,’ replied the Lieutenant-Commander. ‘We will say that you were nabbed while trying to ditch a hospital ship. There is glory for you.’” “A very nice story,” observed the Royal Naval Reserve man drily. “I believed your yarn,” said the Commander reproachfully, “and mine is every bit as true as yours. But no matter. Call up the band and let us get to real business.”