The crew begins Workups with the Sea Training Group to assess if the crew are ready to proceed on to war games at RIMPAC.

The crew gets its first taste of female submariners, discussion takes place with service family about the struggle of submarine life and HMAS Rankin blows a drive-shaft on one of the diesel engines.

HMAS Rankin is underway to Shanghai in preparation for RIMPAC, along the way the crew performs an ANZAC Day ceremony at sea and everyone has fun crossing the equatorial line.

The submarine leaves Shanghai and heads towards Japan where it performs a training drill with a rescue submersible, then the crew has some respite in Japan.

HMAS Rankin replenishes its supplies as a Typhoon heads toward Japan, mechanical issue delay its departure but it joins war games in time making excessive noise so that when the exercise starts, they can run deep and run silent and disappear.

The crew continue on with RIMPAC war games, however the US Navy restrict the submarines movements to avoid repeated embarrassment from HMAS Rankin getting under a US carrier for the second time in a war games. As such war games concludes and some of the submariners meet their family in Hawaii.