Stock Photo - 1959 - 'Frogmen' in training. Royal Marines Amphibious school tools. Ten weeks courses for volunteers are held at the Royal Marine A-philbious School, Hamworthy, near Poole - for the training of 'Frogmen', as the swimmer - canceistes are known in the Services. before acceptance -each man has to prove himself as a swimmer as well as a soldier of Extra - special fitness, initiative resource, daring and skill. Assault coursed, gymnastic feats, swimming tests etc.have to be passed before a man takes part in the course. The frogman is unusually taken to a point off - shore by a submarine, and then a compass bearing, underwater of his to Photo shows hen the weather is warm - the frogman wears bathing suit instead of the usual heavy kit. The breathing apparatus weighs 30 lbs. (Credit Image: © Keystone Pictures USA/ZUMAPRESS.com)