Shinpachi, various sources various spellings, various descriptions depending on whose book you are reading:
In "East to the Dawn" by Susan Butler, she tells of a Japanese journalist named Fukiko Aoki (she later became bureau chief for the Japanese version of Newsweek) who, in 1981, wanted to find out about the rumors that said Amelia Earhart had been executed in Saipan.
In her search, she interviewed Kozu Yukinao who had served as communications officer on the ship Koshu, which is believed to have been involved in finding Amelia Earhart and Fred Noonan. She also saw copies of the log for that ship. She made notes of the dates and places where the ship had been.
She stated that the Koshu received orders to help in the search for the missing plane.
The Japanese navy's 2,080-ton survey ship Koshu almost certainly picked up Amelia Earhart and Fred Noonan from their landfall near Mili's Barre Island, took the pair to Jaluit, where Bilimon Amaron tended to Noonan's wounded knee, and carried the Earhart Electra to Saipan, where it was discovered by American forces in June 1944.
For his book
Amelia Earhart : The Final Story, Vince Loomis went to considerable efforts to dig out the records of what Japanese ships were in the Marshalls in July 1937. He was trying to figure our what ship his star witness, Bilimon Amaron, had seen carrying the Earhart Electra on its aft deck. The only ship Loomis could come up with anywhere near the Marshalls was the seaplane tender
Koshu. She was in Ponape, about 400 miles west of the Marshalls, on July 2, 1937 and arrived in Jaluit in the Marshalls on July 13. Loomis says
Koshu then left Jaluit but returned sometime before July 19 when she sailed for Truk and eventually Saipan. It is between its departure from and return from Jaluit that he says the ship picked up Earhart, Noonan and the plane at Mili Atoll in the southern Marshalls.
The
Koshu was doing oceanographic surveys, and based upon their reports, one can deduce from their speed and departure date to have arrived in the Marshalls (Jaluit) no earlier than July 9th. Official correspondence between the US Navy and State Dept. and Japanese officials at that time acknowledge only the
Koshu in assisting in the survey for AE wreckage.
The Honolulu Star Bulletin has an AP release dated 6 Jul 37 from New York; in sum, Japanese officials report that the " 2100 ton survey ship
Kooshu" is searching in the Marshall Islands. In the main article the spelling is "Koshu", so probably an extra "o" typo. Also the Japanese were searching in "other areas near Howland".
This is probably independent corroboration of the
Koshu's status. Fukiko Aoki, Japanese author, writes in
Searching for Amelia Earhart in 1984 that there were two Japanese ships in the area. The "battleship
Koshu" and the carrier
Kamoi. According to her, she reviewed the logs of the
Koshu which reflect the dates and places reported. The
Koshu left Jaluit on 19 Jul 37 headed to Saipan.
From: U.S. Congress Joint Committee on Pearl Harbor Attack Hearings; Pt. 35, the Clausen Investigation, pp. 52-62.
Fourth Fleet: Survey and Patrol Division: Koshu
The Japanese navy's 2,080-ton survey ship Koshu almost certainly picked up Amelia Earhart and Fred Noonan from their landfall near Mili's Barre Island, took the pair to Jaluit, where Bilimon Amaron tended to Noonan's wounded knee, and carried the Earhart Electra to Saipan, where it was discovered by American forces in June 1944.
Japanese journalist Fukiko Aoki, wife of American writer Pete Hamill. Aoki told Fred Goerner she wanted to help him in his Earhart investigations in the early 1980s