This 'web version' uses Optical Character Recognition (OCR), to interpret the original printed copy and convert it to computer-readable text. This technology can result in text errors.
SPECIALLY CONSTRUCTED BY THE GERMANS FOR TESTING THEIR SUBMARINES, AND HANDED OVER ACCORDING TO THE ARMISTICE : A SUBMARINE-TESTING DOCK, NOW AT HARWICH.
Owing to the shallowness of the w.ters round their coasts, the Germans could not test their submarines at sea, and so they constructed this special testing-dock fo’ the purpose. After being towed into the cylinder, a submarine is shored up, and the hull is subjected to air-pressure equivalent to that of the water at any depth required. Men then descend
into the submarine through the connecting-tubes, and caulk any apparent leaks. The tester can receive three submarines at once, one for testing, and two for docking and repairs. It was towed across to Harwich oy seven tugs. Our photograph shows the entrance, with valve-door.- [PeorooaReP sY C.N.]