HMS Severn is a Batch 1 River-Class Offshore Patrol Vessel (OPV), weighing 1,700 tonnes and measuring 80 metres in length.
Severn is the second of the original batch of River-class vessels.
Last year, the Portsmouth-based ship became the first Royal Navy vessel in nearly 40 years to be decommissioned and then recommissioned.
Watch: In 2016 we spent time on board HMS Severn to learn more about the Royal Navy's Fishery Protection Squadron.
She is nicknamed 'Lucky Severn' after the namesake submarine which came through all of the Second World War.
Royal Navy OPVs protect the UK's interests at home and abroad, safeguarding territorial waters, protecting fishing stocks and performing constabulary duties.
All eight River-class vessels are based in Portsmouth, and consist of two generations – Batch 1 ships, and the newer Batch 2s.
Cover image: File photo of HMS Severn (Picture: MOD).