According to records cited by the Naval Historical Society of Australia, HMS Trump holds the historic distinction of being the last British submarine to make a torpedo attack on an enemy vessel during the Second World War.
Per AI citing : https://www.nytimes.com/2026/04/29/us/hms-trump-submarine-king-charles-ww2.html (paywall)
Also:
"During the final months of World War II, the British T-class submarine HMS Trump (P333) was deployed to the Far East to join the offensive against Imperial Japanese forces.
"Operating as part of the British Pacific Fleet's 4th Submarine Squadron based out of Fremantle, Western Australia, the vessel completed four active war patrols in early-to-mid 1945. Its primary mission was to sever vital Japanese shipping and supply lanes across the Java Sea and surrounding areas.
HMS Trump recorded several successful combat engagements:
May 13, 1945: It sank the Japanese guard boat No. 15 Shosei Maru using heavy gunfire off the Sapudi Strait.
May 24, 1945: The submarine intercepted and sank a Japanese sailing vessel using its deck gun.
May 29 & June 1, 1945: It located and destroyed two Japanese coastal supply ships (coasters).
June 5, 1945: Continuing its patrol, the submarine successfully targeted and sank a Japanese tanker.
August 3, 1945: Working in tandem with its sister submarine HMS Tiptoe, HMS Trump intercepted and attacked an escorted enemy convoy, successfully sinking the army cargo ship Tencho Maru.
August 9, 1945: In one of the final naval engagements of World War II, HMS Trump and HMS Tiptoe teamed up again to track and destroy another Japanese cargo vessel.
Citing
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Wikipedia,
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NYT (above)
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https://rnsubs.co.uk/index.php?PageID=665
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"The submarine remained in service for years after the war before being scrapped in August 1971."
https://www.newsweek.com/what-hms-trump-bell-ww2-submarine-gifted-president-11891247
"For over 20 years, it was a constant presence in Australia as part of the 4th Submarine Squadron based in Sydney. It was the final Royal Navy submarine to be stationed there, departing in January 1969. The vessel was sold and scrapped in Newport, Wales, in August 1971."
https://www.wionews.com/world/-hms-trump-for-donald-trump-what-king-charles-wwii-era-bell-gift-means-1777429969449/amp
War patrol charts and more at https://uboat.net/allies/warships/ship/3526.html