According to the Japanese concept of submarine warfare, Imperial Navy’s submarines were to operate over a large area and attack enemy fleet. To coordinate their activities and search for targets surface flagships were needed.
One of the first activities undertaken by the War Shipping Administration, called to live in United States in the year 1942, was to design a modern-type transport vessel.
The Kriegsmarine battleships, in fact, were only four vessels introduced during 1935-1941.
When, in the early 1930s, the Americans began modernizing their navy, they considered the replacement of old destroyers from the Great War as one of the most urgent tasks
