Shipbuilding, docking and repair facilities at Osaka Iron Works, Sakurajima, Japan in February 1937

In his rapport dealing with the Japanese shipbuilding capacity dated 15 February 1937 No.22 file 409-600 the naval attache dealt with naval and merchant shipyards able to built ships larger as 1,000 tons.

Building ways (length in feet on land: No. 1-305, No. 2-600, No. 3-558, No. 4-505 and No. 5-507

Drydocks (length in feet, top): No. 1-684, wood.

%Maximum capacity annual of naval vessels in tons-peacetime conditions: 130,000.

%=Capacities in tons displacement derived from the time required to built battleships 3 years, cruisers 2.5 year and destroyers and submarines 1-1.5 years.

Source

National Archives USA. Record Group 38: Records of the Office of the Chief of Naval Operations. Series: Secret Naval Attaches Reports. Report of the Naval Attache Tokyo dated 21 January 1937 No. 12 subject Japanese Navy Vessels Built, Building or Authorized. Information of 1 January. M975-002.