HMS Astute surfaces with HMS St Albans in the distance (Picture: Royal Navy).
The Type 23 frigate HMS St Albans has teamed up with the submarine HMS Astute for training in Anti-Submarine Warfare (ASW) skills.
“To be the best at what we do, it is essential that we train both against and alongside the very best,” said Commander John Cromie, Commanding Officer of HMS St Albans.
“HMS Astute provides that partner with whom we can polish our skills to the highest level.”
The vessels form part of the Navy’s anti-submarine capability and the pair practised co-ordinating their responses to potential threats.
HMS Astute is normally based on the Clyde but journeyed to a Scottish loch to take part in the training.
HMS St Albans is a high readiness ship with specialist sonar and torpedoes that are designed to tackle submarines.
Normally she is tasked with protecting the integrity of British territorial waters; last year on Christmas Day she escorted the Russian Admiral Gorshkov frigate as she sailed close to British waters.
At the time Commander Chris Ansell, the Commanding Officer of the Type 23 frigate, said:
"My ship's company take great pride in serving Great Britain and the role they play dealing with both the routine and unexpected.
"Missing parts of Christmas and New Year with our families is never easy, but it is absolutely required as part of our duty to keep Britain safe all year round.”