Work has been carried out at the search and rescue coordination centre to upgrade the technology and introduce new systems.

This means Milford Haven CGOC will be connected to the National Maritime Operations Centre (NMOC) in Hampshire and other Coastguard stations around the country, which will be able to offer mutual support during busy periods.

From 6 March 2015, Milford Haven CGOC and the new national network will start to take on operations from Swansea Coastguard.

The changes to Her Majesty’s Coastguard will see the NMOC and 10 other CGOCs around the UK work together to manage the workload. There will be no reduction in rescue resources.

The Maritime and Coastguard Agency says the availability of Coastguard Rescue Teams, lifeboats, rescue helicopters and other rescue units will be unaffected.

Carl Evans, Maritime Operations Controller at Milford Haven CGOC, said: ‘The way we deliver the coordination of search and rescue operations on our coast and out at sea is changing. But the public won’t notice any difference.

‘If you call 999 and ask for the Coastguard, or issue a mayday broadcast, we will still be here to help you.’