BBC News
New helicopter's first sea rescue
The new coastguard helicopter can fly further and faster than its predecessor
Portland Coastguard's brand new search and rescue helicopter was put to work on its first day in the job.
The Augusta Westland 139 arrived in the morning and by 1510 BST it was on its way to its first sea rescue operation.
It was called to the Cutlass dive boat in Portland Harbour after a diver had suffered a rapid ascent.
The man was winched up into the helicopter, flown to Poole and transferred to the decompression chamber in the town.
During the rescue the coastguards arranged contact between the dive boat and a specialist dive doctor who recommended that the man be airlifted to the recompression chamber immediately.
Allan Norman, Portland Coastguard watch manager, said: "The new helicopter is a fantastic development in our ability to deliver a search and rescue service along the UK coastline.
"It has the ability to fly further and faster than its predecessor and we anticipate many more successful rescues which will prove its operational effectiveness and utilise the range of advanced technology it has on board."