12.7cm Twin Gun Mount Model B Kai 2
|Coastal Defense Ship||Destroyer|
|Light Cruiser||Torpedo Cruiser|
|Heavy Cruiser||Training Cruiser|
|Aviation Cruiser||Fast Battleship|
|Light Carrier||Standard Carrier|
|Armored Carrier||Seaplane Tender|
|Submarine||Aircraft Carrying Submarine|
|Submarine Tender||Fleet Oiler|
|Repair Ship||Amphibious Assault Ship|
This is main cannon of destroyers with minor changes. It is quite identical with the base form, having a fully shielded turret for protection against shrapnel and the elements, and also with an improved gun elevation. It is said to be mounted aboard destroyers, such as on the Yuudachi.
This gun is the modified version of the twin gun Model B which was used by Ayanami-class and Akatsuki-class destroyer. The main difference between the Type A and Type B is that instead of the former's elevation range of −5° to +40°, type B's range is upgraded to 75°, which is required for the more complicated and effective AA systems installed on newer destroyers. Type B armor, however, was too thin to withstand heavy seas and splinter damage, so the Type B Kai was introduced, adding more protection.
First mounted on Hatsuharu-class destroyers, but the effectiveness is unknown.
|Improvement Cost: 10 60 100||★||S||M||T||W||T||F||S||Helper Ship|
|✗||✗||✗||Ayanami Kai Ni|
Yuudachi Kai Ni
|Consumes: 1x 12.7cm Twin Gun Mount Model B Kai 2||6||2/4|
12.7 cm/50 Type 3 naval gun (the later part)