By TZoli Part I: The British Ancestry The design history of the Japanese Nagato class battleships, the world’s first and then fastest 16″/410mm gun armed battleships is long and only partially documented. The commonly held statement that the Nagato class is the first indeginiously designed Japanese Battleship or the first Battleship entirely designed by Yuzuru…
Category: IJN
Warship Projects Profile No.JP201 – Amagi class carrier conversions
Short summary of Amagi class CV preliminary designs
Yamato class genesis
The Imperial Japanese Navy’s Yamato class’ design history
Warship Projects Profile No.JP003
A-57 battleship design
Warship Projects Profile No.JP002
A-55 battleship design
Warship Projects Profile No. JP301*
Imperial Japanese Navy B-65* class Large Cruiser Design
Warship Projects Profile No. JP301
Imperial Japanese Navy B-65 class Large Cruiser Design
Warship Projects Profile No. JP001Z
Imperial Japanese Navy Number 13 class Capital Ship Preliminary Design Z
Warship Projects Profile No. JP001Y
Imperial Japanese Navy Number 13 class Capital Ship Preliminary Design Y
Warship Projects Profile No. JP001X
Imperial Japanese Navy Number 13 class Capital Ship Preliminary Design X
Warship Projects Profile No. JP001O
Imperial Japanese Navy Number 13 class Capital Ship Preliminary Design O
Warship Projects Profile No. JP001N
Imperial Japanese Navy Number 13 class Capital Ship Preliminary Design N
Warship Projects Profile No. JP001M
Imperial Japanese Navy Number 13 class Capital Ship Preliminary Design M
Warship Projects Profile No. JP001L
Imperial Japanese Navy Number 13 class Capital Ship Preliminary Design L
Warship Projects Profile No. JP001K
Imperial Japanese Navy Number 13 class Capital Ship Preliminary Design K
Warship Projects Profile No. JP001I/J
These two designs, outwardly similar were the last with 16″ guns and represented the ultimate 4 quad layout for a total of 16 guns. This required a longer hull and so displacement rose to 54.000 tons, despite using the very weight-efficient quad turrets. Below are models of H and I/J: ‘J’ attempted to reduce displacement…
Warship Projects Profile No. JP001H
Design H applied all quad turrets except in position A, where the hull is the narrowest – this allowed for a slight reduction in length and 2.000 tons less displacement
Warship Projects Profile No. JP001G
Imperial Japanese Navy Number 13 class Capital Ship – Preliminary Design G
Warship Projects Profile No. JP001F
Imperial Japanese Navy Number 13 class Capital Ship – Preliminary Design F
Warship Projects Profile No. JP001E
Imperial Japanese Navy Number 13 class Capital Ship – Preliminary Design E
Warship Projects Profile No. JP001D
Imperial Japanese Navy Number 13 class Capital Ship – Preliminary Design D
Warship Projects Profile No. JP001C
Imperial Japanese Navy Number 13 class Capital Ship – Preliminary Design C
Warship Projects Profile No. JP001B
Imperial Japanese Navy Number 13 class Capital Ship – Preliminary Design B
Warship Projects Profile No. JP001A
Imperial Japanese Navy Number 13 class Capital Ship – Preliminary Design A