United States submarine USS O-12 (SS-73), known as the Nautilus, in the Arctic region during a polar expedition. A map depicts the polar caps and the route taken by Nautilus O-12 during its expedition to reach the polar region. A sea diver on the side of the Nautilus submarine. Men aboard the Nautilus with ice in the foreground. Snow covered line of a crane aboard the submarine. A man aboard the Nautilus as he wears thermal gear. A man work on a machine in the engine room of the submarine.
United states submarine Nautilus in the Arctic region during a polar expedition. Ice floats on surface of the water. A man at the bow of the submarine Nautilus is pulled aboard with a line. Two other men help him. A diver being helped by a man in the engine room to put on his helmet. The diver goes under water as the man holds an air hose. The diver comes out and removes his helmet. A man puts a thermometer in the diver's mouth to record his body temperature.