Robert fails a drug test but is determined to prove his innocence. Meanwhile, the Hammersley uncovers a smuggling operation by Samaruian rebels which is designed to destabilise the government.

A kidnap drama on the ocean and relationship tremors below decks rock Hammersley as she sails the Coral Sea.

Tragedy rocks HMAS Hammersley as the crew races to prevent a terrorist attack on a busy Australian port. Meanwhile, Kate and Dutchy discover ingredients for a radioactive 'dirty bomb' are being smuggled into Australia on illegal fishing boats, and Mike is stunned to realise SAS Officer Jim Roth has proposed to Kate - will he let the woman he loves marry another man?

After going on a blind date with an SAS commander, Kate believes her love life is starting to look up. When a French naval captain attempts to seduce Mike, he has to call on all his diplomacy skills. An illegal fishing boat is the subject of a perilous boarding.

Dutchy and the crew are caught in a deadly fight for survival when a training exercise turns into a manhunt.

When one of their mates is kidnapped by terrorists, the crew of Hammersley is in a desperate race to save his life.

Kate uncovers a deadly conspiracy when she investigates a cluster of rare illnesses on a remote island. Hammersley is on the hunt for a ship suspected of dumping toxic chemicals into tropical waters.

The crew of Hammersley are caught in a deadly fire fight while rescuing an SAS team from an undercover mission.

Bird is compromised when she discovers Ryan working for a private security firm while AWOL from the navy. Mike fears his son has been murdered by mercenaries and risks his career to get revenge on the killers. A pregnancy scare forces Kate to reconsider her future.

A suicide bomb attack in a nightclub has a shocking impact on the crew of HMAS Hammersley. Dutchy goes undercover with the SAS to capture a group of deadly extremists before they can attack Australian targets. 2Dads risks his life to save Hammersley from a bomb attack. Kate's world is rocked when her former lover, SAS officer Jim Roth, returns to Hammersley. Mike risks his career by refusing to co-operate with a high ranking ASIO spy.

Swain is obsessed with the mysterious sinking of a refugee boat. The crew uncovers a smuggling ring with a deadly method of sneaking goods into Australia, and Bird's romantic life is complicated when Mike's godson Ryan joins the crew of Hammersley.

As part of the boarding party checking a possible FFV, Dutchy doesn't hide his surprise at seeing one of the crew is SAS Captain Jim Roth. His flash of recognition is noticed by the ship's master, and the question now is, has Jim's cover been blown? ASIO "spook" Madelaine Cruise is furious. She confirms that Jim was on a mission and insists CO Mike Flynn shadow the vessel in case Jim needs assistance. And so he does, after Dutchy sees two men fighting on the deck, and the subsequent boarding party finds an area awash with blood and Jim under a tarpaulin with a serious head wound.

Robert becomes the lifeline when 2Dads is trapped alone in a sunken research submarine. Mike and the crew pursue a marine biologist suspected of sabotaging the submarine, and with 2Dad's air supply running out, Charge must use all his technical skills to help save his mate's life.

Kate is hunted down by an obsessed criminal after she kills his accomplice during a boarding. When Bird is kidnapped, the crew fears she will be murdered as payback.

Dutchy finds himself the prime suspect in a cold-blooded murder after he rescues a beautiful young woman. The Hammersley rushes to save a professional diver trapped in a shark cage.

2Dads and Charge come under fire while investigating a UFO sighting. Ryan and Bird befriend a young man with a tortured secret that could get them all killed. Charge hides a health scare that could end his navy career, and Mike suspects a local police chief of masterminding a major drug-smuggling operation.

When Hammersley rescues a shipwrecked woman, they uncover a murderous criminal conspiracy. Kate saves Dutch's life during a gun battle with smugglers, sparking his romantic interest, and Bomber makes a shocking decision after she and 2Dads are caught breaking the non-fraternisation rule.

When HMAS Hammersley answers a distress call from Bright Island, Captain Mike Flynn and his crew discover a young woman lying paralysed on the beach. She is conscious but unable to talk, and despite their best efforts they are unable to save her. Thus begins new Executive Officer Lieutenant Kate McGregor's first day aboard a patrol boat, and CO Mike Flynn's obsession with the mystery of Bright Island. Something very odd is happening in connection with the Island. The Federal Police move in to investigate the woman's death, but no-one is talking. Her colleague, the striking Doctor Ursula Morrell, seems to know more than she's letting on, and Mike finds himself drawn to her cool beauty and her vulnerability.

The Hammersley uncovers a sophisticated drug smuggling network, with explosive results. Mike is convinced the Federal Police are covering up the poisoning death of a marine biologist. Kate is jealous of Mike's relationship with Ursula Morrell, while Nikki struggles to restrain her feelings for ET.

The crew of the HMAS Hammersley come across an abondonned catamaran in the middle of the ocean, which uncovers the beginnings of a murder mystery. A sailor has gone missing and Nikki puts her navigational sklls to the test in the attempt to find them. The ship is then hit by a cyclone.

Mike is torn between saving the life of a missing refugee girl, and the lives of two shipmates bitten by the deadly irukandji jellyfish. While pursuing pirates, the Hammersley rescues a family of illegal immigrants from an unseaworthy ship.

The Hammersley attempts the daring capture of an illegal fishing ‘mother ship’ but is thwarted by violent eco-terrorists. Mike finds himself falling in love with beautiful marine biologist Ursula Morrell, who later goes missing under mysterious circumstances.

The crew uncovers a people smuggling racket, when they almost collide with a floating shipping container full of North Korean refugees. The Hammersley races to capture the smugglers’ ship and save the lives of their human cargo. Kate is wooed by a charming civilian sailor. Meanwhile, Mike is determined to solve the mystery of Ursula’s disappearance.

The HMAS Hammersley confronts a series of new menaces in the northern waters from pirates to toxic crabs, not to mention a gorgeous solo yachtswomen with a rescue fetish.

The video of Chefo's bucks night finds its way into Kate's hands and she is humiliated by what she finds on it. The HMAS Hammersley comes across an unexploded sea mine and Spider manages to save the life of a boy who was near the mine, but have Spider's days in the navy come to an end?