Kaiyō No.1-class oceanographic research ship

The Kaiyō No. 1-class oceanographic research ship (第一海洋型海洋観測船, Daiichi Kaiyō-gata Kaiyō-kansokusen) was a class of oceanographic research ship/weather ship of the Imperial Japanese Navy (IJN), serving during World War II. The IJN official designation was 200-ton oceanographic research ship (二〇〇瓲海洋観測船, 200-ton Kaiyō-kansokusen).

Kaiyō No.1-class oceanographic research ship

The Kaiyō No. 1-class oceanographic research ship (第一海洋型海洋観測船, Daiichi Kaiyō-gata Kaiyō-kansokusen) was a class of oceanographic research ship/weather ship of the Imperial Japanese Navy (IJN), serving during World War II. The IJN official designation was 200-ton oceanographic research ship (二〇〇瓲海洋観測船, 200-ton Kaiyō-kansokusen).