Unlike most standard Abyssals, PT-Imp Packs are very small and fast.
- All ship types suffer a severe
 accuracy and  firepower penalty against PT-Imp.
- Attacking them with larger guns is not very effective, smaller guns being recommended instead.
| Accuracy formula against PT-Imps
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The Accuracy formula against PT-Imps:[1][2][3][4]
- [math]\displaystyle{ \text{Hit Rate}_\text{vs.PT} \text{%} = \Big\lfloor \big\lfloor \lfloor \text{ACC}_\text{Standard} + \text{Mod}_\text{Amagiri} \rfloor \times \text{Mod}_\text{Formation} \times \text{Mod}_\text{Morale} \times \text{Mod}_\text{PT} + \text{Mod}_\text{Add} \big\rfloor \times \text{Mod}_\text{Vanguard} \times \text{Mod}_\text{Ship} \times \text{Mod}_\text{Equipment} \times \text{Mod}_\text{Night} \Big\rfloor - \text{EVA}_\text{PT} + 1 }[/math]
- With
- [math]\displaystyle{ \text{ACC}_\text{Standard} }[/math] the standard accuracy described here
- PT-Imps are "DDs" in the game, so the [math]\displaystyle{ \text{Mod}_\text{formation} }[/math] for vanguard is 1.1 during shelling, and 1.2 during the torpedo phase.
- Historical accuracy bonuses during Events are included in the Standard Accuracy Term, i.e. it is affected by the [math]\displaystyle{ \text{Mod}_\text{PT} }[/math] modifier.
- [math]\displaystyle{ \text{EVA}_\text{PT} }[/math] the PT estimated evasion
 described bellow,
- The main Accuracy modifiers are
- [math]\displaystyle{ \text{Mod}_\text{Amagiri} }[/math] being:
- [math]\displaystyle{ \text{Mod}_\text{Formation} }[/math] the Acc mod of each formation (see here),
- [math]\displaystyle{ \text{Mod}_\text{Morale} }[/math] the morale effects (see here)
- [math]\displaystyle{ \text{Mod}_\text{PT} = 0.42 }[/math],
- [math]\displaystyle{ \text{Mod}_\text{Add} = 24 }[/math],
- [math]\displaystyle{ \text{Mod}_\text{Night} }[/math] being 0.7 during night battle, 1 during day battle.
- [math]\displaystyle{ \text{Mod}_\text{Vanguard} }[/math] being 1.2 when using the Vanguard Formation
 .[5]
- [math]\displaystyle{ \text{Mod}_\text{Ship} }[/math] the bonus given by ship types, described below,
- [math]\displaystyle{ \text{Mod}_\text{Equipment} }[/math] the bonuses given by equipment, described below,
- When several equipment are used on a ship, it is then the product of those bonuses.
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Amagiri Kai Ni/D
 has the ability to prioritize focusing on attacking PT-Imp with significantly increased accuracy if any are present.
- Ships placed in the composition slots above and below her will gain a noticeable accuracy boost and will prioritize attacking PT-Imp if any are present.
During Events, some special bonuses may be added, with "historical" ships and equipment gaining some accuracy bonuses[6].
| Ship Type |
[math]\displaystyle{ \text{Mod}_\text{Ship} }[/math]
|
| DD & DE |
1.0
|
| CL, CLT, & CT |
0.82
|
| All other types |
0.7
|
- Notes
- It is recommended to use anti-PT setups on DDs only, such setups compromising overall combat effectiveness.
- Having a Reinforcement Expansion is important because it can save a ship slot by containing a machine gun or skilled lookouts.
- Combining equipment is recommended to see significant boosts to accuracy.
- Using other setups improving accuracy is also advisable:
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