In Calshot, the RNLI crew are called out to a young man who has lost consciousness in a jet ski accident. The Dover crew rescue two anglers in danger of being washed off a pier. Two crews pool resources to help a man struck in the mud.
The RNLI crew in Whitby go to rescue 2 fossil hunters cut off by the tide. In Swanage, a trainee yachtsman has suffered a mysterious head injury. The Poole crew scramble to search for a missing paddleboarder.
When a kayaker fails to make it back to shore the Larne crew race to the rescue. The Torbay crew race to the rescue of a dinghy run aground. 2 capsized kayakers test the Cardigan crew. The Flint crew launch to aid a beached fin whale.
The Conwy crew respond to reports of two people caught out by the tide. At Flint, a crew come to the aid of a yacht that has broken its mooring. In Devon, the search is on for someone who has let off an emergency distress signal.
The Plymouth crew race to the rescue of a fisherman who's fallen off his boat. In Llandudno, a father and son capsize their kayak. In Wick, a photographer is cut off by the tide. The Fraserburgh crew rescue a fisherman who has run aground.
In Torbay, Devon, a yacht has sent out a mayday, meaning the lives of the six crew on board are in grave and imminent danger. In Wales, the Aberystwyth crew race to the rescue of a small boat that has lost engine power.
The Blackpool crew respond to reports of a teenager swept out to sea. The Margate crew search for 2 paddleboarders who have drifted out to sea. In Porthcawl, a crewmember has their wedding interrupted as 2 people are cut off by the tide.
The crew at Wick search for a paddleboarder who has drifted a mile out to sea. The Fraserburgh crew respond to a mayday call from a trawler that has run aground. In Dorset an inflatable boat struggles to get back to harbour in high winds.
The North Berwick crew try to save a windsurfer as he and they fight the gale-force winds of Storm Dennis off the east coast of Scotland. In Northern Ireland a crew face two very different jobs. A yacht has become stuck in Dorset.
The Bembridge crew face a race against time to save an old fishing trawler that's become trapped on a submarine barrier and is now taking on water. The Cowes crew embark on a night time search for a missing jet skier.