The Royal Navy has bid farewell to the last of its iconic Trafalgar-class submarines, HMS Triumph, which has returned to Devonport Naval Base for the final time before decommissioning.

HMS Triumph, the seventh and final boat of her class, embarked on her final journey from Clyde Naval Base in Scotland.

Reflecting on her legacy, Commander Aaron Williams, HMS Triumph’s Commanding Officer, said:

“As HMS Triumph prepares to decommission, we reflect on her legacy with immense pride. This submarine has served not just as a vessel, but as a symbol of commitment, courage and camaraderie. Although HMS Triumph has carried out her missions with quiet strength and dedication, behind every mission, deployment, and triumph has been the sacrifice and steadfast support of the families who stood behind us.”

HMS Triumph was laid down at Barrow shipyard in 1987 and commissioned in 1991, the last of her class to be constructed. During her career, she demonstrated the remarkable endurance and capability of the Trafalgar-class submarines. In 1993, she completed a record-breaking deployment to Australia, travelling 41,000 miles submerged without support—the longest solo deployment by a Royal Navy nuclear-powered submarine at the time.

Her operational history includes firing Tomahawk missiles during the Afghanistan conflict in 2001 and participating in international efforts in Libya, targeting military positions to protect civilians. On both occasions, she flew the Jolly Roger upon her return—a tradition symbolising successful combat missions within the Submarine Service.

Rear Admiral Andy Perks, Royal Navy Director Submarine, highlighted the significance of her retirement:

“Having spent many years serving in Trafalgar-class SSNs, it is with both pride and sadness that I see these excellent submarines reach the end of their career. These vessels have helped keep our country safe for over 30 years. As this era ends though, we can be assured that our Submarine Service remains well served by the Astute-class SSN.”

The Trafalgar-class submarines, initially commissioned during the Cold War, played a vital role in maintaining the United Kingdom’s maritime security for over three decades. Triumph follows her sister vessels—HMS Talent, Trenchant, Torbay, Tireless, Turbulent, and Trafalgar—into retirement as the baton is passed to the Astute-class attack submarines.

The Astute-class represents the largest, most advanced, and most powerful attack submarines ever operated by the Royal Navy. Currently, HMS Astute, Ambush, Artful, Audacious, and Anson are in service, with two more under construction at BAE Systems in Barrow-in-Furness.

Triumph’s formal decommissioning ceremony, scheduled for early 2025, will symbolise the completion of this transition.

George Allison
George has a degree in Cyber Security from Glasgow Caledonian University and has a keen interest in naval and cyber security matters and has appeared on national radio and television to discuss current events. George is on Twitter at @geoallison

14 COMMENTS

    • When HMS Triumph is decommissioned, we will have 6 commissioned SSNs. Rule of 3 would mean that 2 could be at sea at any given time. Not many, given that there are ‘Seven Seas’.

      • Although apparently 7 is all we need, even though the last time tensions were this high we had 32 ( 1990) the 97 review said we needed 12 for a peaceful unipolar world in which the west had won….now with a potential war in the pacific within the decade and Russia pushing…well I bet they wish they had closer to 32 than 12….whoops I mean 7.

        • The sad truth is that during the hight of the Cold War we would have 32-35 attack subs ( mix nuclear and electric)..with 21 SSNs in 1990. Even after the massive stupidity of the end of history and last man culled it down to 12 in 1997, the defence review at that time said we needed 12 for a peaceful happy world…well due to massive miss management in the 1990s to 2011 we have 6 at point in history even our deny everything politicians call a pre war age…

          What should have happened without the idiots in charge is that we should have had that baseline of 12 build from 1993 with extra builds from 2014 as a reaction to the decreasing security situation..so moving to a fleet of 15 for 2025.

        • Realistically, virtually any gradual increase from this nadir of capability, w/ the eventual introduction of the SSN-A class, should be considered at least a moral victory. Various increased target numbers have been floated, but it will require a Hurculean effort to achieve, especially w/ the funding limitations of expenditure of ~2.5% of GDP for defence, for the foreseeable future. Very few Western politicians appear to be willing to advocate for additional defence spending, at least until a crisis engulfs them personally

          • Looks like European NATO will be moving to 2.5% in the next round. Assuming Elon doesn’t close the pentagon that’s a massive boost in defence spending given the combined economy of Europe and North America.

        • Yes, but 8 of those were old Oberon class, and 4 Upholder class that entered service for about 5 minutes. And earlier generation nuclear SSN’s, plus the Polaris nuclear deterrent. I don’t think the RN would swap Astutes and Vanguard class for any number of the above. The Russian fleet is also vastly smaller compared to the early 1990s.

    • Just refit her and keep her going. I think the last 2 Trafalgar class could potentially serve as a useful second line subs for deploying specials forces and as smaller than astute class close inshore work

      • Her pressure hull and reactor are at the end of their lives. You can’t just simply refit them. And no such thing as 2nd line SSN’s.

  1. I would not be decommissioning any SSN’s until 2028. 2027 is the high risk year for China invading Taiwan and even sitting at the dock she can serve’s a purpose.

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