HMS Severn

HMS Severn (P282)

HMS Severn is a River-class offshore patrol vessel built by Vosper Thornycroft at their Woolston yard in 2002. With her sisters Tyne and Mersey, she is one of three offshore patrol vessels ploughing the seas around the UK almost every day of the year.

SEVERN inherited the nickname of our predecessor, the ninth HMS Severn, a wartime submarine which served in the Atlantic and Norwegian campaigns. The submarine survived the entire conflict, earning her the title ‘Lucky Severn’.

The 3 River-class offshore patrol vessels patrol the UK EEZ, routinely operating hundreds of miles off the UK coast.

Their primary role is to deliver maritime security, encompassing fishery protection and Marine Management tasks on behalf of the Marine Management Organisation, as well as a wide range of operations to ensure the security, integrity, and safety of UK waters.

Facts & figures

Facts & figures

1,700 tonnes

Total displacement 

80 metres

Total length 

20+ knots

Top speed

Our operations

Current operation



Alongside in Portsmouth Naval Base.

Our base

Our base


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Commanding Officer

Commander Phillip Harper

Qualified submariner, underwater warfare officer, specialist navigator and hydrographic surveyor. As well as navigating and commanding Royal Navy ships across the globe for the last quarter century, Cdr Phillip Harper has been deeply involved in the training and mentoring of junior officers in bridgemanship, shiphandling and staffwork.

HMS Severn's role

SEVERN was the first of her class to deploy away from the UK; in 2015 she deployed to The Caribbean for eight months, providing security and reassurance to the British Overseas Territories and dependencies. Travelling 30,000 miles and visiting 20 different countries and islands, she was permanently on standby to assist in the event of a natural disaster.

In 2017, as the first of the Batch 2 River class came into service, SEVERN was decommissioned.  With increasing demands on UK offshore patrol vessels, and after a decision to base the Batch 2 vessels abroad, it was decided to recommission SEVERN. This is the first time in nearly 40 years that a Royal Navy ship has been recommissioned.  SEVERN was brought back to life in the Spring of 2020 and has taken on the role of a dedicated navigation training ship, as well as her UK patrol tasks. 

Unit history

Royal Navy careers

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