The British submarine H-29 in dry dock after being raised from where she sank after a blunder made by a petty officer, which cost the lives of six men, when he submerged the boat while the hatches were open. At a British court of inquiry, they attributed the disaster to the petty officer's blunder. A four inch pipe was thrust through a hatch, while repair work was under way and that is what prevented the hatch from being closed, allowing the inrush of water, which drowned the men in her hold.
Courtesy of the San Francisco Maritime Museum, San Francisco, California, 1969.
Naval History and Heritage Command