Ryūzō Marumo

1921

• Preliminary report of the Hakuhō Maru Cruise KH-70-4 (IBP cruise) July 29-September 1, 1970, The Japan Sea
• Preliminary report of the Hakuhō Maru Cruise KH-71-2 (IBP Cruise) May 7 - June 3, 1971
• Preliminary report of the Hakuhō Maru cruise KH-72-1
• Preliminary report of the Hakuhō Maru cruise KH-81-5 (WESTPAC)