61cm Quadruple (Oxygen) Torpedo Mount Late Model/Bonuses
| Ship | Extra Requirement | 
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Note |
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Shiratsuyu-class Kai Ni      Asashio-class Kai Ni       Yuugumo-class Kai Ni      
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+2 | +1 | Stacks 2 times max | ||||||
| (★MAX) | +1 | +2 | +1 | ||||||
Kagerou-class Kai Ni  
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+2 | +1 | Stacks 2 times max | ||||||
| (★5+) | +3 | +1 | |||||||
| (★MAX) | +1 | +3 | +1 |