HMS Mersey

HMS Mersey is the youngest of the original batch of River class patrol vessels. She patrols the waters of the UK and up to 200 miles in the Atlantic ensuring that fishing boats and trawlers stick to internationally-agreed quotas.

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Mersey was the last ship to be built at Vosper Thornycroft yard, in Woolston, Southampton, for the Fishery Protection Squadron – the oldest unit in the Royal Navy. 

Originally, HMS Mersey like her sister ships, were not owned by the RN, she was leased by BAE who retained the responsibility for any major maintenance and upkeep.  However in 2012 the Ministry of Defence bought the ships outright and they are now owned by the Royal Navy.

She returned to the UK in February 2017 following a 13 month deployment which saw the patrol ship sail 38,000 miles. In that time she visited 31 ports in 19 countries over three continents and worked with the Standing NATO Maritime Group 2.


On Deployment

This unit is currently on deployment find out how that might affect you.

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Sailors, Royal Marines and RFA personnel recognised for outstanding contribution and excellence on operations


HMS Mersey Latest News

Defence Secretary secures ships to protect home waters


HMS Mersey visits Leith to support Edinburgh Tattoo

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Current operation Maritime security

British ships and units, which include the Royal Marines, are committed to operations around the world. Operations focus on maritime security, reassurance and wider regional engagement to build regional maritime capability.

  • Antarctic patrol

    To provide a UK sovereign presence in the British Antarctic Territory.

Providing security at sea

The UK has a responsibility to its citizens and its allies to endeavour to safeguard the high seas. This is why the Royal Navy protects home and international waters – making sure the global trade that Britain and the world depend on can proceed without a hitch.

International partnerships

As the fifth largest economy in the world, the UK has responsibilities towards its allies and partners. But Britain also has global ambitions – namely to protect the seaways underpinning the country’s prosperity. The Royal Navy plays a crucial role in fostering these enduring and lasting alliances with other nations.

Location Global

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Unit History

The First Mersey1814

The first HMS Mersey was a Conway-class 26-gun Sixth Rate, launched in 1814.

The Second Mersey1858

The second HMS Mersey and her sister ship HMS Orlando were the longest wooden ships ever built for the Royal Navy; at 336 feet overall, they were nearly twice the length of HMS Victory.

Huge Ship1858

At 5643 tons displacement she was a huge ship for her day, heavily armed, strongly manned and relatively fast at 12 knots. She was sold in 1875.

The Third Mersey1885

The third HMS Mersey was a protected cruisers, the first to be built with no sailing rig, as solely steam-powered ships. She was launched at Chatham dockyard in March 1885.

The Fourth Mersey1914

In 1914 the RN bought three Amazon river monitors built by Vickers for Brazil. These – renamed Mersey, Humber and Severn – were the first of a new type of specialist shore-bombardment ships.

Battle Honours1915

Belgian Coast 1914-1915
Königsberg 1915


They were very unmanoevrable and dangerously unseaworthy in open waters in anything more than a Force 5 wind. She was sold to breakers in 1921.

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Commanding Officer Will Edwards-Bannon

Rank: Lieutenant Commander

Lt Cdr Edwards-Bannon joined the Royal Navy in 2005.

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HMS Mersey has a range of 7,800 sea miles


HMS Mersey was launched on the 14th June 2003

HMNB Portsmouth

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