HMS Dragon is due to return to Portsmouth tomorrow after a six-month patrol mission.
The Type 45 destroyer travelled 22,000 miles and visited 15 ports across the Atlantic and Pacific oceans.
The deployment included routine patrols of the Falkland Islands and supporting the community of Tristan De Cunha by moving stores and supplies around the island.
She also worked alongside maritime forces from Africa, Europe, South America and the US in a training exercise in the Gulf of Guinea designed to improve regional cooperation and information-sharing practices, while stopping illegal activity at sea.
She is expected to pass the Round Tower, in Old Portsmouth, at around 2.15pm tomorrow.