HMS Mersey

HMS Mersey (P283)

Launched in 2003, HMS Mersey is the youngest of the original batch of River-class offshore patrol vessels.

Facts & figures

Facts & figures


Total displacement

79.5 metres

Total length

20+ knots

Top speed

Our operations

Current operation

Maritime Security


British ships and units, which include the Royal Marines, are committed to operations around the world.

Our base

Our base


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Commanding Officer

Lieutenant Commander James Mitchell

HMS Mersey's role

HMS Mersey is one of the busiest ships in the Royal Navy Fleet, averaging 220 days at sea every year.


Most of those are dedicated to fishery protection, working alongside her sisters to ensure that fishing boats and trawlers stick to agreed quotas and regulations on behalf of the Marine Management Organisation.


Given her regular presence in home waters, Mersey is also frequently involved in monitoring the movements of foreign warships as they pass the UK.

Unit history

Royal Navy careers

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