A seven-time Olympian, Hashimoto also served as Japan's chef de mission for three Olympics.
Shiraishi sails around the world in 94 days, 21 hours and 32 minutes aboard DMG MORI Global One.
Olympics minister Seiko Hashimoto emerges as potential successor to Mori.
The International Olympic Committee (IOC) is poised to move the 2020 Summer Olympic marathon and race walking events from Tokyo to Sapporo on Japan’s northern...