At dark on the morning of 26th February, the Glenart Castle was leaving Newport in the Bristol Channel heading towards Brest, France, when despite being lit as a hospital ship she was hit by a torpedo. The blast destroyed most of the lifeboats, while the subsequent pitch of the vessel hindered attempts to launch the remaining boats. In the eight minutes the ship took to sink, only seven lifeboats were launched, and the rough seas with inexperienced rowers swamped most of the boats. Only a few survivors were reported and 162 people were killed including the Captain Bernard Burt, eight nurses, seven Royal Army Medical Corps (RAMC) medical officers and 47 medical orderlies. Evidence later found suggested that the submarine may have shot at initial survivors of the sinking in an effort to cover up the sinking of Glenart Castle. After the war, the British Admiralty sought the captains of U-Boats who sank hospital ships, in order to charge them with war crimes. Kapitänleutnant Wilhelm Kiesewetter — the commander of UC-56 — was arrested after the war on his voyage back to Germany and interned in the Tower of London. He was released on the grounds that Britain had no right to hold a detainee during the Armistice.