Japanese battleship Ise
On 12 April 1922, while at Yokohama, "Ise" hosted a delegation which included the Prince of Wales (the future King Edward VIII), who was accompanied by his second cousin, the future Lord Mountbatten of Burma. Captain Kanna Norikazu relieved Nagasawa on 1 December. The ship aided survivors of the Great Kantō earthquake in September 1923. From the early 1920s through the late 1930s, "Ise" mostly cruised off the coast of China. Little detailed information is available about her activities during the 1920s, although she helped sink the obsolete destroyer during gunnery training on 10 August 1926. The ship was overhauled in 1928–1929, during which her forward superstructure was enlarged and her aviation facilities improved.
Edouard Izac
By the ship's fifth voyage, Izac was its executive officer. During this voyage, the ship successfully ferried troops to Brest, France on 23 May 1918 and began the return trip to New York City on 29 May. The next day, the destroyer escort for the convoy departed leaving four troopships to cross the sea alone. Izac was in command of the guns on the afterdeck. A submarine was spotted early in the morning on 31 May and the ships attempted to evade it unsuccessfully. "President Lincoln" was with a convoy of ships from the coast of France when it was struck by three torpedoes at a range of about at 08:54 by German submarine "U–90". By 09:15, her captain, Commnder P.W. Foote ordered the ship abandoned. "Abraham Lincoln" rolled starboard at 09:30 and sank, but only took 26 men in a crew of 700 with her. The rest remained in lifeboats as the rest of the convoy headed to a safe distance, as was policy at the time. "U-90" then surfaced, attempting to locate the ship's captain, but was unable to do so, pulling Izac out of a lifeboat instead because its crew recognized his offers' insignia. Izac was taken as prisoner of war after lying to the sub's crew that the captain had gone down with the ship. He was subsequently held in quarters aboard the ship while it dived to avoid depth charges from the pursuing .
Izac later recalled that he was treated well while a prisoner, dining with the ship's officers and playing bridge and other card games with the crew. During political discussions on the boat, he also learned about the German mindset and conditions for German U-Boat crews, which were generally superior to conditions in other ships at the time. During this time, he began to take mental notes of the sub and the routines and operations of her crew, hoping to gather intelligence that could be useful against German submarine efforts. He concealed his knowledge of German language which he used to listen in on the crew. Using maps and binoculars borrowed from the crew, Izac was able to ascertain the ship's return route to Kiel, which took it north of the Shetland Islands, into the North Sea and past Skagerrack and Kattegat in a bid to avoid minefields and patrols. He also learned of a rendezvous point used by U-boats near Denmark to avoid patrols, though was thwarted in his first escape attempt here. He also learned of at least one island where sub crews were commonly landing to poach mutton, which he considered ideal for a trap. Arriving in Kiel on 10 June, he was transferred to the , on which he was ferried to a prison camp in Karlsruhe. Conditions there were more difficult and the prisoners were fed less, so and he tried unsuccessfully to escape again.