Drawings by ship type:

Aircraft Carrier
Aviation Ship
Battlecruiser
Battleship
Cruiser
Destroyer
Spacecraft

Drawings:

C-39 preliminary design for Agano
C-44 Kai-Agano
C-44 Kai-Agano
CVH-B
Fujimoto 30 Project 12x16.1in
Fujimoto 30 Project 9x16.1in
G-15 Kai-Taihō as planned
G-15 Kai-Taihō with tentative 1945 camouflage scheme
G-6 (Sōryū preliminary design)
G-8 (Sōryū preliminary design)
H-II unbuilt variants
Hiraga Treaty Battleship 1928
Hiraga Treaty Battleship 1929
HOPE-X
Ibuki (C-46) as planned
Ibuki (C-46) as planned
Ise 1942 first hybrid conversion proposal
Ise 1944 full carrier conversion plan
Kai-Akizuki
Kai-Shimakaze
Kaneda's 500,000 ton Battleship
Kii
Kumano proposed anti-aircraft conversion
Mogami as planned
Myōkō final design