E.T. proposes to Nikki whilst on shore leave and then leaves to go diving with the Robsen Dive Boat at Red Reef. E.T. doesn't make it back on time when the Hammersley has been called back into service early. The crew receive an alert for a missing dive boat with eight personnel on board. A search of a near island reveals that all divers in the water are dead, amongst them E.T. who is found by Nikki. At the same time the crew must carry on looking for a ghost ship which seems hell bent on killing anyone in their path whilst still mourning for their lost crew mate.

An animal and a stowaway both cause trouble aboard the HMAS Hammersley.

Kate becomes concerned about a boat which pleads asylum but which contains only one man and several women and feels they are destined for the illegal sex trade. On board they find a pregnant female in labour who Swain tries to save but she dies leaving him no option but to cut the baby from her - a boy. Mike orders that the boat be turned around despite Kate's objections. Later Kate chases up a lead left by the dead female's belongings and soon unearths an off-shore floating brothel which has the dead woman's sister amongst them held against their will.

On the way to answering a mayday call the Hammersley rescue ex-Navy Lieutenant Geoff Kershaw who's boat had capsized. When they reach the location of the mayday call they only find Matt & Simone Robsen's boat deserted but loaded with weapons. They search the nearby island and find Matt & Simone tied up who tell them that some men tied them up and left them there. Hammersley let NavCom know the serial numbers of the weapons who advise them that a dangerous ex-Navy man Shane Davis had stolen them from an Army base in Darwin months previously. Mike leads two teams to ...

Whilst pursuing an illegal diving boat the crew retreat and leave behind a young diver in the water. The Hammersley crew rescue the young boy and the crew from the dive boat. Spider develops an attachment to the boy who turns out was sold to the illegal fishermen as he's a deaf mute. Shortly afterwards the Hammersley intercepts a mayday call from the Robsen's dive boat to the Robsens but when Mike contacts the Robsens directly they refuse help. Mike suspects they are up to no good and so orders the Hammersley to the location of the Robsen dive boat at Red Reef which ...

The crew of the HMAS Hammersley are assigned the task of protecting a shipment of nuclear waste from a terrorist attack.

A daring rescue at an abandoned nuclear test site causes the crew of the HMAS Hammersley to be exposed to toxic radiation.

Kate McGregor is terrorised by a mysterious stalker aboard an abandoned cargo ship.

2Dads neglected his duty in refueling the inflatable which causes them to lose two jet-ski thieves who had just robbed a pearl boat. To get back at what he believes is very harsh treatment given to him by Kate and Buffer he starts a rumor that both are a couple secretly. But Buffer and Kate find an unique way to punish him.

The Hammersley comes under attack from a heavily-armed boat of smugglers who discharge mines near the boat in order to get away. At the same time CMDR Steve Marshall orders a training exercise under the watchful eye of Buffer's former girlfriend Cynthia Luxton. Elsewhere, Charge is forced to face up to his past when his estranged sailor son Jamie helps in the mission to track down the smugglers.

Bomber and the crew of the Hammersley rescue what appear to be two stranded tourists after their boat capsizes but when the male tourist dies suddenly on board an investigation ensues and it turns out that they are in fact drug smugglers. In trying to get back drugs left on the Hammersley the female, Jila, and others take Bomber and RO hostage and it's a race by the rest of the crew to rescue them before the violent Jila kills them. Meanwhile, Nav goes in search of answers into ET's death and becomes certain that ET's business partner Campbell Fulton was responsible ...

The Hammersley rescue an unconscious female, named Belinda Lloyd, adrift on a raft near the Red Reef Oil Fields. When Belinda recovers she tells Swain and Mike that she and her husband were attacked and she escaped on a raft. She later identifies ET as one of her attackers but Nav refuses to believe ET was involved and becomes distraught over it. Later that night Belinda escapes and the Hammersley set course for a nearby island to look for her. Kate finds Belinda's belongings and proof that she did meet ET. Whilst searching the island Buffer falls into an underground ...

The Hammersley and its crew monitor Penfold Island near the Red Reef Oil Fields where the oil smugglers have based their operation. When they cannot contact their Army lookout on the island Kate leads a crew onto the island where they find the dead lookout. Spider and Kate are attacked by the assailant but Kate recognises him - Campbell Fulton. Fulton escapes by jetski. Mike pursues the Robsens but they say Fulton was sacked by them weeks previously. The Hammersley intercept a call from Robsens ordering that Fulton be silenced. Mike orders that the Hammersley shadow ...