The 125th time my father chose to watch The Enemy Below (1957. Starring Robert Mitchum and Curd Jurgens: In the battle of good vs. evil in WWII, an American Destroyer takes on a German Submarine)at the TV, Flavia and me refused to stay and went to bed with a good book. My father was fond of sea battles, even if he had been an artillery officer during WW2, and he had never learnt how to swim, being born in the interior countryside. In a movie about submarines people look crammed, but this is nothing in comparison with the real place. A famous scene in Operation Petticoat, when a typical feral engine head mechanic and the senior nurse fix an engine using her bra, could have never happened in the supercrammed spaces of a real submarine, in my opinion. Here you can get an idea from the Onondaga, where you can see a part, the most spacious one of the engine room. Then there are the two periscopes, one for surveillance, and the other for attack. The masks are hanging everywhere, because if salt water penetrates into the hull and touches the batteries,it creates hydrochloric acid. The first of the Oberon class to be commissioned into the Royal Navy was Orpheus in 1960, followed by the nameship in 1961. The last to be commissioned was Onyx in 1967. Six were commissioned between 1967 and 1978 for the RAN. In 1982, HMS Onyx took part in the Falklands War, the only conventional submarine of the RN to do so, landing members of the SBS. All Oberons in service, including boats exported, have now been decommissioned; the last RN boats were decommissioned in 1993, with the final Canadian and Australian Oberons decommissioned in 2000. Like the Porpoises, the Oberons were far quieter than their American counterparts. They performed remarkably well in clandestine operations, performing surveillance and inserting special forces, vital during their heyday in the Cold War. These operations were primarily carried out by the British across Arctic Europe; the Canadians across the Arctic Pacific; and the Australians throughout south-east Asia and as far north as the Sea of Japan. The Oberon class was arguably the best conventional submarine class of its time, with an astonishing reputation for quietness that allowed it to exist into the 21st century until replaced by newer classes such as the Collins and Victoria classes in Australia and Canada respectively. Thank you for your kind comments.