Saving submariners – rise of the ROVs

Charles Bowers 'Swede' Momsen – one of the great pioneers of submarine rescue. Inventor of the 'Momsen Lung' breathing device, he directed the successful 1939 rescue of all 33 surviving members of the Squalus, which sank in 243 feet of water, using a then revolutionary chamber system. Image courtesy of the US Navy.