The crew of HMAS Hammersley patrol Australia’s tropical waters, facing dangerous, exciting and gut-wrenching missions. In the brand new season, newcomers join the ship causing a stir amongst the other officers. Commander Mike Flynn and his crew confront pirates, terrorists, nuclear hazards, people-smugglers, sex slaves, and international arms traders. They will risk their lives to save others – friends and foe – from sinking ships, blazing boats and diving accidents. They will be called upon to use every hi-tech weapon and unique skill at their disposal. And amidst the action and excitement of their patrols, the crew of Hammersley find time for rest, romance and relaxation, often in exotic foreign ports. Their camaraderie, loyalty and integrity will be tested at work and at play.