Spaceport Kii

Spaceport Kii (sometimes stylized as Space Port Kii) is a commercial spaceport located in Kushimoto, Wakayama Prefecture in Japan. Japan's first private spaceport, it is operated by Space One, who are using it to launch their solid-fuel rocket KAIROS. As of 26 March 2024, only one launch attempt has been made on the site on 13 March, which ended up being a failure.

Location and construction
Spaceport Kii's location is located near the southernmost tip of Honshu and is only a two-minute (1.9 kilometer) drive from Kii-Uragami Station in Nachikatsuura.

The launch site was funded by several Japanese corporations, including Canon Inc., Shimizu Corporation (who also constructed the site), and IHI Corporation. Ground broke on 19 November 2019.

Launches
The first launch attempt of the KAIROS rocket was scheduled on 8 March 2024, however it was delayed to the 13th due to a ship in too close of proximity. It launched on the 13th, but disintegrated just seconds later.

Space One has stated that it plans to have around 20 launches of KAIROS a year.