New Model High Temperature High Pressure Boiler/Bonuses

Ship	Extra Requirement								Note
Kongou-class Kai Ni C	(★0-5)		+1					+2	Non-stackable
	(★6-7)		+1					+3
	(★8-9)		+2					+3
	(★MAX)	+1	+2					+3
I-201-class Houshou Kai Ni/Sen									+1 Not self-stackable