Here's a thread for some unfinished, and/or unbuilt coastel-defense ships I've drawn. The designs I have are from several nations, ranging from the Scandics, to China.
From smallest to largest:
Bjørgvin class, the never completed design for Norway, bought by the British to become HMS Gorgon and Glatton.
The Sverige class as planned in 1911. The class saw some changes from planned to completion, that being the repostitioned main-mast, deletion of the aft tripod legs, the deletion of the pilot-house, repositioning of the searchlights, Drottning Victoria and Gustav V being finished with rebuilt bows with a half-raised focsle deck, and the Sverige herself being finished with a half turtle-deck bow. Originally there were to be 4 Sverige-class ships, but due to WW1 Sweden was unable to afford the fouth ship, and the latter two of the class were finished post-war.
The Pansarskepp 1926 was a design for an improved fourth ship to be built. The bow was further redesigned, an improved 50-caliber version of the 280mm gun was made, and the 75mm DP gun was to be used, as opposed to the sp gun on the Sverige. The hull was also lengthened to increase speed.
Don't have much backstory or design history to this one, only raw data and that it was made by Armstrong. It's a large and slow CDS for China, armed with 4x15" guns, 8x4,7" guns.