Kaiyo Kansokusen

About Kaiyo-kansokusen

Kaiyo-kansokusen is a Oceanographic Observatory Ship. Six ships were were newly buit in 1938. Their type ship was "Sanyo Maru" of Hokkaido Fisheries Research Institute. Kaiyo Nos. 5 and 6 were completed in 1943, but simplified due to lack of materials.
Two captured ships were also added to his class in the navy list in 1943.

Data of Kaiyo-kansokusen

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History of Kaiyo-kansokusen

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Kaiyo No.1

Kaiyo No.2

Kaiyo No.3

Kaiyo No.4

Kaiyo No.5

Kaiyo No.6

Tenkai No.4

Tenkai No.5


Photo Source:

  1. Kaiyo No.1, No.2 and No.6: "Japanese Naval Vessls 1869-1945", K.K. Bestsellers, Shizuo Fukui
  2. Kaiyo No.4: "Kaijo Hoancho 30 nenshi", Japan Coast Guard Foundation
  3. Kaiyo No.5: "All ships of Japan coast guard 1947-2003" (Ships of the World. Kaijinsha Jul 2003 special edition)
  4. Tenkai No.4. "Koninklijke Paketvaart-Maatschappij" De Alk bv 1991 A.J.J. Mulder