1910 – Submarine Armor – Chester E. Macduffee (American)

1910 – Submarine Armor by Chester E. Macduffee. In Popular Mechanics Magazine, November 1914 it was reported that the new armored diving suit went down to a depth of 212 ft. in Long Island Sound, establishing a new American record for deep-sea diving. Above images: Scientific American, 22 August, 1914. The left hand is an …