Koiwai Island
小祝島, Koiwai-shima
33°47′N 131°56′E
33°47′N 131°56′E
Chart
Nearest islands
- Iwaishima3.8 km
- Nagashima15 km
- Yashima20 km
- Heigun Island26 km
- Suō Ōshima32 km
- Nuwa Island60 km
Also in Bōyo Islands

Suō Ōshima
129 km²▲ 691 m
Major islands

Nakashima
21.2 km²▲ 296 m
Major islands
Heigun Island
16.6 km²▲ 468 m
Major islands

Nagashima
13.7 km²▲ 313 m
Major islands

Gogo Island
8.5 km²▲ 282 m
Major islands

Iwaishima
7.7 km²▲ 365 m
Major islands
Nuwa Island
4.7 km²▲ 206 m
Minor islands

Yashima
4.2 km²▲ 288 m
Minor islands
Sources
Facts
- Geometry, areas and high points: OpenStreetMap contributors (ODbL), Copernicus GLO-30, via Talus.
- Talus