The Royal Navy flagship HMS Queen Elizabeth has sailed alongside its Omani counterpart.
Images of the aircraft carrier sailing side by side with the Shabab Oman II were shared on social media over the weekend.
In a tweet, First Sea Lord Admiral Sir Tony Radakin, who will take over as the new Chief of the Defence Staff later this month, said the moment "reflects 200 years of a historic and strategic partnership between two great allies".
HMS Queen Elizabeth has been spearheading the UK's Carrier Strike Group 21 formation on its maiden deployment and operated with Shabab Oman II as the carrier continues her homeward-bound journey.
Commodore Steve Moorhouse, Commander UK Carrier Strike Group, said the images of the two flagships side-by-side was a "spectacular sight to behold".
Last month, a traditional cheer ship for the Indian Navy was performed by the Carrier Strike Group as they bid farewell after completing the joint phase of the Konkan Shakti 21 exercise.
The Carrier Strike Group is on the return leg of its 28-week global tour, which will see all ships and personnel return home.
Watch: The Carrier Strike Group (CSG21) story so far.