16. On board the submarine's deck.
Sightseeing in Sydney picture - It was indeed a thrilling experience to enter a submarine for the first time in our lives. Here is a shot on HMS Onslow's deck. But my, you have to be a midget to get in. To get through the second door into the belly of the beast, you need to turn round, and descend bottom first through a tiny trap door down a steep ladder. People who are large will not fit.