In Liverpool a team investigate the death of a crewman attempting to board a tugboat, and there's a mayday call in the North Sea.
Helicopter crews attend a sick child on Mount Snowdon, a French yacht in serious trouble in the English Channel, and a walker and his dog on the mountains of Scotland.
In Caernarfon, a helicopter is tasked with helping a kite surfer in trouble at sea. In Fareham, a fishing vessel triggers a distress signal, raising concern for the crew's welfare.
Off the coast of Devon, ferocious waves sweep a yacht onto rocks, and the Coastguard Rescue Helicopter from Caernarfon receives a call about an injured person trapped in a ravine.
A motor-powered yacht gets in serious trouble off the south coast. Sinking fast, the two casualties on board call for help and the Coastguard Rescue helicopter from Lydd takes part in a precarious rescue.
A helicopter crew is dispatched when an around-the-UK rowing boat challenge goes disastrously wrong off the Mull of Kintyre, putting five rowers' lives in jeopardy.
An 85-year-old woman is battered by waves in north Wales, and a couple is stranded on a rock cut off by the tide in Cornwall.
A distress call comes in from the uninhabitable granite islet Rockall, a lone dog on a cliff in Wales causes concern, and there are people stranded in a Cornish blow hole.
A helicopter crew from Newquay must fly 60 miles into the English Channel to an incident aboard a cruise liner, where a passenger is having a suspected stroke and must be winched off the ship.
Helicopter Rescue 936 from Caernarfon are called out when a walker has a serious laceration to his head, and the paramedic must be winched down in tricky circumstances.
A helicopter is dispatched to save a skipper's life when strong winds and high tides threaten to push a yacht in to a harbour wall. And a surveillance team investigate a worrying sign of pollution.
After a tragic boat accident at Poole Harbour, Dorset, the lead investigator must assess CCTV, the vessel, expert witness statements and police reconstruction to bring justice for the casualty's family.
A serious incident occurs when a commercial fishing vessel runs right into a private fishing vessel. And in rough seas, word comes in that a fisherman has suffered an amputation of the leg.
After a fishing trawler in the North Sea sends out a distorted mayday, a helicopter crew must race to locate and save crew members afloat in dangerous, freezing waters.
