KOIZUMI Ibuki

World Championships

Rank	Event	Year	Location
26	49er	2018	Aarhus, DEN

Class World Championships

Rank	Event	Year	Location
33	49er	2020	Geelong, VIC, AUS

Class European Championships

Rank	Event	Year	Location
28	49er	2019	Weymouth, GBR
39	49er	2018	La Rochelle, FRA
79	49er	2017	Kiel, GER

World Cup

Rank	Event	Year	Location
10	49er	2019	Enoshima, JPN
15	49er	2018	Gamagori, JPN
28	49er	2020	Enoshima, JPN
28	49er	2019	Genoa, ITA

Class World Championships Juniors

Rank	Event	Year	Location
6	49er	2018	Marseille, FRA
14	49er	2016	IJsselmeer, NED

Ibu (Facebook team page, 24 Jul 2020)

Athlete, Student

Waseda University , Tokyo, JPN

English, Japanese

Waseda University [Tokyo, JPN]

Kan Yamada [national], JPN; Kenji Nakamura [national], JPN

His older brother Sosaku Koizumi has represented Japan in sailing, and has competed in the 470 class at the world championships. (SportsDeskOnline, 03 Sep 2020; site-isaf.soticcloud.net, 2020)

He began sailing at age seven in Hikari, Japan. (wasedasports.com, 28 Jun 2020; jsaf.or.jp, 02 Jan 2017)

He followed his older brother into the sport. (wasedasports.com, 28 Jun 2020; jsaf.or.jp, 02 Jan 2017)

To finish in the top eight at the 2020 Olympic Games in Tokyo. (wasedasports.com, 28 Jun 2020)

He and his crewmate Leo Takahashi spent time training in New Zealand ahead of the 2020 Olympic Games in Tokyo. (chugoku-np.co.jp, 31 Jul 2020; wasedasports.com, 28 Jun 2020)

He has been given the Medal of Honour by the governor of Yamaguchi in Japan. (yamaguchi.lg.jp, 03 Jul 2013)