BBV) Bonuses

Battleships receive accuracy bonuses if the guns are fit and penalties if it is overweight [1].

When equiping '"Large Caliber Main Guns" on a FBB/BB/BBV, the resulting accuracy bonus/penalty is:

[math]\displaystyle{ \text{ACC}_\text{bonus} = \sum^{\text{All Groups}} C_{Group} \times \sqrt{N_{Group}} \times M }[/math]

[math]\displaystyle{ \text{All Groups} }[/math] the gun groups and sub-groups defined in the following tables.
[math]\displaystyle{ C_{Group} }[/math] the accuracy modifier of the group, given in the following table.
- When a ship has additional bonuses to a group compared to her type, this bonus is summed as a separate "Group"
[math]\displaystyle{ N_{Group} }[/math] the number of guns of a same group.
[math]\displaystyle{ M }[/math] the marriage bonus of 0.6 when applicable.
- This bonus is applied in all cases, so penalties are reduced by 0.6, as well as bonuses.
- For Iowa-class with the USN 16" Mk7 guns, M may be better (about 0.7).

Large Caliber Main Guns Groups
Gun Groups	Guns
Sov 30.5 cm ^[1]	Sov 30.5cm Triple Sov 30.5cm Triple K
RM 30.5-32 cm ^[1]	RM 305mm/46 Twin RM 305mm/46 Triple RM 320mm/44 Twin RM 320mm/44 Triple
35.6 cm	IJN 35.6cm Twin IJN 35.6cm Twin Dazzle IJN 35.6cm Twin K IJN 35.6cm Twin K2 IJN 35.6cm Triple Proto IJN 35.6cm Triple Dazzle KMS 38cm Twin KMS 38cm Twin K RN 38.1cm Twin ^[1] RN 38.1cm Twin K ^[1]
FR 38 cm	FR 38cm Quad FR 38cm Quad K FR 38cm Quad K2
RM 381 mm	RM 381mm/50 Triple RM 381mm/50 Triple K
41 cm	IJN 41cm Twin IJN 41cm Twin K2 IJN 41cm Triple Proto IJN 41cm Triple K IJN 41cm Triple K2 RN 16" Triple RN 16" Triple + AFCT RN 16" Triple + FCR USN 16" MkI Twin USN 16" MkV Twin USN 16" MkVIII Twin USN 16" Triple Mk6 USN 16" Triple Mk6 + GFCS USN 16" Triple Mk6 M2
USN 16" Mk7	USN 16" Triple Mk7 USN 16" Triple Mk7 + GFCS
46 cm Twin Proto	IJN 46cm Twin Proto
46 Triple cm	IJN 46cm Triple
46 cm Triple K ^[1]	IJN 46cm Triple K
51 cm	IJN 51cm Twin Proto IJN 51cm Twin IJN 51cm Triple Proto
15.5 cm Sec	IJN 15.5cm Triple Sec IJN 15.5cm Triple Sec K IJN 15.5cm Triple Sec K2

↑ ^1.0 ^1.1 ^1.2 ^1.3 ^1.4 There is not enough data yet to determine exact category of those guns.

↑ ^1.00 ^1.01 ^1.02 ^1.03 ^1.04 ^1.05 ^1.06 ^1.07 ^1.08 ^1.09 ^1.10 ^1.11 ^1.12 ^1.13 ^1.14 ^1.15 ^1.16 ^1.17 ^1.18 ^1.19 ^1.20 ^1.21 ^1.22 ^1.23 ^1.24 ^1.25 ^1.26 A multiplier of 0.6x is applied when married.
↑ ^2.0 ^2.1 A multiplier greater than 0.6x is applied when married.
↑ ^3.0 ^3.1 For BB only: if the base maximum HP (unmodified & before marriage) is > 92, set fit bonuses are set to 0.
↑ In addition to other base type bonuses.
↑ Yamato Kai Ni Juu specified bonuses override the base BBV bonuses.
↑ In this case, the "46 cm Triple", "46 cm Triple K", and "51 cm" groups are counted as one.

Sources: [2] [3]

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