never built

Hello, i would like to learn more about ww1 or ww2 monitors that were prototype or never left the drawing board, river monitors or sea worthy monitors are what im looking for. If possible can you provide pictures or documents please (this is my first post here and i would like to learn more...

Hello All, I am looking for any information or leads people might have on Vickers' Dreadnought battleship Design No. 318 as nearly accepted by the Russian Naval Ministry in late 1907. I am particularly looking for information regarding the designed ships' dimensions, arrangement, and any...