Advancing UK Aerospace, Defence, Security & Space Solutions Worldwide
  • Home
  • /
  • Defence
  • /
  • Defence Secretary praises 50 years of CASD as new submarine named

Defence Events

Defence Secretary praises 50 years of CASD as new submarine named

Defence Secretary Penny Mordaunt has announced the fourth Dreadnought submarine as HMS King George VI ahead of a special service at Westminster Abbey today to recognise the Royal Navy’s Continuous at Sea Deterrent (CASD) over the past 50 years.

Above: Concept image of a Dreadnought submarine.
Crown copyright

The Defence Secretary has announced the fourth Dreadnought submarine as HMS King George VI ahead of a special service at Westminster Abbey today to recognise the Royal Navy’s Continuous at Sea Deterrent (CASD) over the past 50 years.

Advertisement
ODU RT

Since April 1969, a Royal Navy ballistic missile submarine has patrolled every single day, without interruption, providing the nation’s deterrent and helping keep the UK and our allies safe. This is the UK’s longest sustained military operation ever undertaken and is known as Operation Relentless.

Defence Secretary Penny Mordaunt said: "Operation Relentless has seen generations of submariners from HMS Resolution to HMS Vengeance on constant watch, for every minute of every day for the last five decades. This is the longest military operation we have ever undertaken and continues right this minute deep under the sea.

"We pay tribute to those incredible crews, their supportive families, the Royal Navy and the thousands of industry experts who will continue to sustain this truly national endeavour for many years to come."

CASD50 provides a chance to not only remember the national endeavour of the past half century but to look to the next-generation of ballistic missile submarines, the Dreadnought class. This will consist of four boats helping to ensure the security of generations to come. The Dreadnought-class are expected to enter service in the early 2030s, helping to maintain Operation Relentless.

Prior to the service at Westminster Abbey, First Sea Lord, Admiral Sir Philip Jones, announced that HMS King George VI will now join HMS Dreadnought, Valiant and Warspite as the fourth Dreadnought submarine. HMS King George VI makes history as it will become the first naval vessel to bear that royal title. King George VI had strong naval connections having spent time at the Royal Naval College, Osbourne followed by Dartmouth. He then went on to earn a mention in despatches for his service on HMS Collingwood during the Battle of Jutland.

Advertisement
ODU RT

First Sea Lord Admiral Sir Philip Jones said: "For half a century, the Royal Navy has always had at least one ballistic missile submarine at sea on patrol, safeguarding the ultimate guarantor of our country’s security – and that of our NATO allies too. Today, as we pause to reflect on the significance of this 50-year milestone in our proud history of submarine operations, and the national endeavour that underpins it, we are also looking to our future.

"Today’s announcement that the fourth of our future ballistic missile submarine fleet will be named HMS King George VI follows a long tradition of naming capital ships after our country’s monarchs; together with her sisters Dreadnought, Valiant and Warspite these submarines represent the cutting edge of underwater capability and will meet the awesome challenge of continuous at sea deterrence into the second half of the 21st century."

It is estimated that around 30,000 people are involved in building and supporting nuclear submarines across the UK. Maintaining this skilled workforce helps to invest millions of pounds into local communities and ensures the UK continues to boast a highly-skilled workforce in this sector.


 

Advertisement
General Atomics LB
Metis wins Kongsberg contract for Skyperion Lightweight

Defence

Metis wins Kongsberg contract for Skyperion Lightweight

15 June 2026

Lincoln based specialists in providing Radio Frequency (RF) and drone detection tech, Metis, has been selected to provide its Skyperion Lightweight passive RF sensor to Kongsberg to support the Polish SAN counter Uncrewed Air System (cUAS) programme, worth over £30 million.

Cambridge Pixel showcasing VSD-C2 at Eurosatory

Defence Events

Cambridge Pixel showcasing VSD-C2 at Eurosatory

15 June 2026

Cambridge Pixel is at Eurosatory, Paris Nord Villepinte exhibition centre (15th-19th June), showcasing its iVSD-C2 display software.

Thales unveils AI-powered Gladiator at Eurosatory

Defence Events

Thales unveils AI-powered Gladiator at Eurosatory

15 June 2026

Today at Eurosatory in Paris (15th-19th June), Thales has unveiled its new AI-powered Gladiator Training Data Analytics solution with Advanced After Action Review (AAR) capabilities that include interactive timelines, exercise replay, tactical metrics grounded in the fundamental principles of warfare, and AI-powered communications analysis.

Europe

Defence

Europe's largest drone test centre opened in Swindon

15 June 2026

The new Defence Secretary Dan Jarvis MP has opened Europe’s biggest drone testing centre in Swindon, learning lessons from the Ukraine and Iran conflicts and set to rapidly develop and field capabilities in far shorter time frames.

Advertisement
ODU RT
BAE Systems launching advanced digital fires capability at Eurosatory

Defence Events

BAE Systems launching advanced digital fires capability at Eurosatory

12 June 2026

BAE Systems is launching its latest digital innovation to the front-line at Eurosatory in Paris next week, an advanced Indirect Fire Control System designed to enhance the precision, speed and connectivity of modern artillery operations.

UK Defence Secretary resigns

Defence

UK Defence Secretary resigns

12 June 2026

UK Defence Secretary John Healey has resigned, citing funding levels outlined in the forthcoming Defence Investment Plan (DIP) as unacceptable and that it would impact the readiness of Britain's armed forces.

Advertisement
ODU RT
Advertisement
FIA2026 animated banner