Kate is determined to thwart a terrorist attack after discovering the HMAS Cairns is the target for a dirty bomb, while Jim asks her for a decision about his marriage proposal.
The crew of the Hammersley investigates why a security organization's boat opened fire on fishermen, and Mike discovers that his son Ryan is working for the suspect company.
Charge awakens after a drunken night out in a foreign port to discover he is married to the daughter of the man who runs an illegal fishing syndicate.
Members of the crew are dropped off on an island to participate in a team-building exercise, but two hunters attack Bird and Dutchy.
Crew investigates terrorist network.
The Hammersley is called to a research submarine that is unable to surface because of an electrical fire - but disaster strikes and the crew uncovers a deadly conspiracy.
Dutchy and 2Dads stumble across an illicit drug operation in a quiet fishing village, leaving Mike with a difficult decision.
One of the Hammersley crew accidentally outs undercover operative, putting the man's life in peril.
Kate's persistence in investigating illegal waste-tippers saves an island community from poisoning.
When the Hammersley encounters victims of the people-smuggling trade, one of the crew is disturbed by the incident.
Dutchy rescues a beautiful young woman, then finds that he is the prime suspect in a murder.
When Kate is forced to shoot a young woman in self-defense, she becomes the target of the woman's vengeful brothers.
The crew helps the victims of a terrorist bombing, and discovers the Hammersley could be the villains' next target.
The Hammersley's crew encounters a gang of cocaine traffickers who take Mike hostage and threaten to kill him.
The team stumble upon some ruthless criminals hunting for gold.
Bomber has to single-handedly save Two Dads and Kate when the prisoners take control of the flotilla using cyanide.
The crew of the HMAS Hammersley receive a mayday call from a yacht ransacked by pirates; Fraser is colluding with the thieves.
A mission to deliver vital medical supplies to remote islands in New Guinea erupts into violence when Dutchy and Swain stumble across an explosive power struggle.
A Russian sailor and his Swedish companion go missing on a diving trip.
A rescue mission goes wrong due to RO.
Kate is taken hostage by four men on a fishing boat.
Swain discovers victims of an illegal organ trade.
The team encounters the infamous skipper of an illegal fishing vessel; Robert takes too many sleeping pills.
The crew is attacked by a group of escaped criminals when they attend to a plane crash victim.
The crew members discover a carbon neutral community on a desert island.
When a woman claims that her daughter has been kidnapped, the team traces the child to a luxury cruiser owned by the child's natural father.
While patrolling the waters of the Arafura Sea, the crew find a weighted down corpse.
When two dads find skinned crocodile carcasses on a remote tropical beach the team begins a night time surveillance operation on the hunt for poachers.
An assignment to provide security for an Internationally Protected Person quickly turns into an explosive situation.
The crew spies on the oil smugglers in a bid to dismantle their operation.
A sea rescue casts doubt on the circumstances of ET's death; Buffer uncovers an illegal oil smuggling operation; Charge's weight threatens his navy career.
Bomber performs a daring rescue to save two tourists but tragedy strikes when one of the pair dies mysteriously.
A group of heavily-armed smugglers take advantage when the crew of the Hammersley perform a training exercise.
The inflatable runs out of fuel while pursuing criminals.
Four of the crewmembers have to fight for their lives when they are left on board a seemingly abandoned cargo ship.
The crew searches for survivors of a helicopter crash and find themselves on an island with a high level of radiation after it was used for nuclear tests.
Spider discovers a bomb in the laundry room, and faces a race against time to save the crew and the Hammersley from destruction.
The Hammersley approaches a fishing boat that retreats quickly but leaves behind a diver, while Nikki receives information that makes her doubt ET.
The Hammersley answers a mayday call, but upon arrival, the crew finds a deserted vessel filled with weapons.
Spider goes under cover to infiltrate a sex-slave racket operating off the Australian coast; Swain helps deliver a baby.
A young woman is discovered lying paralyzed on the beach.
After answering a distress call, Capt. Mike Flynn and the crew find a young woman paralyzed.
Ray Walsman is arrested and handed over to the Samaru police, but he escapes, as Mike Flynn sets a trap for him.
Buffer faces a difficult time when he is kidnapped and later betrayed, while Mike Flynn is back at the helm.
The crew follow a fishing boat after finding a body in the water.
Mike and Jim are both critically injured during a bold rescue mission on Samaru. Meanwhile, Kate is made acting CO of the Hammersley.
The Hammersley is once again in hot pursuit of the cabin cruiser responsible for trafficking weapons and ammunition to the Samaru Islands. Meanwhile, Mike Flynn receives a tempting offer from Ray Walsman.
Bomber Brown and Spider Webb fall overboard and as the man of the watch, Buffer takes it hard that the two missing officers might drown; Buffer also deals with a personal tragedy.
The crew find a boy who has found a cache of guns.
The crew of the Hammersley is joined by a federal agent and goes in search of an illegal fishing boat; while on board they find the fishing boat crew is starting to exhibit symptoms of bird flu.
Robert fails a drug test; a smuggling operation run by Samaruian rebels; a seriously injured sailor is rescued from a Chinese container ship.
Kate feels her love life is improving after a blind date with an SAS commander; a French naval captain flirts with Mike, testing the commanding officer's diplomacy skills.
The Hammersleys is hijacked by a mysterious gang of illegal immigrants determined to flee Australian waters; Nikki and Kate's lives are at stake when they are taken hostage.
Hammersley's new chef lands herself in trouble when she loses her temper with a crew member, while the team discovers a dead pirate and dangerous cargo on board a stolen boat.
The bomb disposal squad tackles an unexploded mine in Portland harbour; a grim recovery mission; Hammersley is sent to rescue aid workers.
Mike is forced to make the most difficult decision of his life.
The Hammersley races to save a boatload of victims from Rick Gallagher's deadly toxin.
Swain is held hostage by an international terror group.
Mike pursues a kidnapper into a mangrove swamp.
The Hammersley loses its mascot.
The crew races to rescue children missing in a cyclone.
The Hammersley confronts a series of new menaces in the northern waters.
A shipping container is found to contain refugees.
The crew goes after an illegal shark fin fishing boat.
The Hammersley rescues a family in distress; Buffer is torn between duty and his sense of justice.
The Hammersley nearly collides with a deserted yacht.
The ships gets involved in a hunt for a murderous gang of drug smugglers.
Executive Officer Lieutenant Kate McGregor and Bosun's Mate Spider Webb go on their first patrol.