A Royal Navy frigate docked at Fairlie Pier earlier today. 

HMS Portland is a type-23 Duke-class frigate that was originally launched in 1999. 

She is 133 metres in length and can travel at a maximum speed of 28 knots out of her home base of HMNB Devonport in England.

The vessel is currently in the midst of sea trials and maintenance, and is thought to be on her way to Faslane. 

In January, Portland tracked the Russian guided missile frigate Admiral Gorshkov and accompanying tanker Kama as they sail in international waters close to the UK.

The Type 23 frigate joined the Norwegian Coast Guard vessel Bergen, as the Russian ships transited south through the Norwegian Sea.

Portland with her specialist Merlin helicopter tracked and reported on the movements of the Russian ships through the North Sea.