“Miami-class cutter USCGC Tampa photographed in harbour, prior to the First World War. Completed in 1912 as the U.S. Revenue Cutter Miami, this ship was renamed Tampa in February 1916. On 26 September 1918, while operating in the English Channel, she was torpedoed and sunk by the German Submarine UB-91. All 131 persons on board Tampa were lost with her, the largest loss of life on any U.S. combat vessel during the First World War.” Official U.S. Navy photo NH 1226 from the U.S. Navy Naval History and Heritage Command
Recently the United Kingdom’s Ministry of Defense, at the request of the U.S. Naval History and Heritage Command, recovered the bell from USS Jacob Jones (DD-61) the only US Navy destroyer sunk in World War I.
Perhaps if we ask politely, they might also recover the bell or some other significant artifact from USCGC Tampa. It would make a great centerpiece for the future Coast Guard Museum’s display regarding the Coast Guard’s participation in World War One.
The position of the wreck is known, 50°40′N 6°19′W, and it is less than 50 miles off the UK coast.
Chuck Hill's CG Blog 
The Coast Guard does have an artifact from the Tampa. There is a photo of it here: The only remnant of a sunken Coast Guard cutter > United States Coast Guard > My Coast Guard News (uscg.mil)
March 14, 2024
The only remnant of a sunken Coast Guard cutter
By Renee Coleman, National Coast Guard Museum (NCGM) director of public affairs
Amongst the stacks and rows of the Coast Guard Heritage Asset Collection is a dollar bill-sized placard so unassuming that it’s easily overlooked. Measuring just a smidge under 4 inches in height, a tad bit over 12 inches in width, and a mere .3 inches in depth, this bronze placard is the only verified artifact from the Coast Guard Cutter Tampa, which sank in September 1918 off the coast of Wales, just before the end of World War I.
PA2 Andrew Tompkins, the curatorial historian for the National Coast Guard Museum, holds this placard very near and dear to his heart and ranks it as one his favorite pieces in the collection.
“This placard is arguably the most impactful artifact in the collection from World War I,” he said. “It represents a significant loss of life. We lost 111 Coast Guard service members, four Navy personnel, five civilians and 11 members of the British Royal Navy.”
The sequence of events that led the placard back to the United States is still something of a slight mystery, but over the decades the story has slowly been pieced together, save for some time gaps.
“It washed up on a beach in 1924 in Porthcawl, which is a town in Wales,” Tompkins said. “It was found by a local resident, and the placard was still attached to a piece of wood from the Tampa’s original lifeboat.”
The placard was verified as belonging to the Tampa because of its standard size and shape, and it holds an identification number that can only match the Tampa.
Somehow, someway the placard was returned from the United Kingdom to the United States shortly after its discovery, and eventually returned to the Coast Guard for safekeeping.
“Every other artifact, that I know of, we’ve gone out to find,” Tompkins said. “This is the only artifact that has come to us. It broke free from the Tampa and literally rose from the depths of the Atlantic to come back to us, and that’s part of what makes this piece so incredibly special.”
I just received an email reporting that Tampa is not at the reported position. That it has been looked for but was not found. But there is a good chance it may be found in the near future.