The tables below are the total bonus you get towards a particular stat when you have multiple equipment providing a bonus. The tables are based off the following optimised upgrade combinations:
Total ★
11
12
13
14
15
16
17
18
19
20
Equipment
5/6
6/6
6/7
7/7
7/8
8/8
8/9
9/9
9/10
10/10
Total ★
21
22
23
24
25
26
27
28
29
30
Equipment
7/7/7
7/7/8
7/8/8
8/8/8
8/8/9
8/9/9
9/9/9
9/9/10
9/10/10
10/10/10
Total ★
31
32
33
34
35
36
37
38
39
40
Equipment
7/8/8/8
8/8/8/8
8/8/8/9
8/8/9/9
8/9/9/9
9/9/9/9
9/9/9/10
9/9/10/10
9/10/10/10
10/10/10/10
It is important to note that while whole number breakpoints are important, fractions should not be discounted as they can be multiplied by various formulas to hit the next whole number. Therefore, you should aim to maximise your available improvement bonus.
0.66 Modifier
ASW from SONARs and DCs.
Total ★
1
2
3
4
5
6
7
8
9
10
Bonus
0.66
0.94
1.15
1.33
1.49
1.63
1.76
1.88
2.00
2.10
Total ★
11
12
13
14
15
16
17
18
19
20
Bonus
3.12
3.26
3.39
3.52
3.64
3.77
3.88
4.00
4.10
4.21
Total ★
21
22
23
24
25
26
27
28
29
30
Bonus
5.29
5.41
5.53
5.65
5.77
5.88
6.00
6.10
6.21
6.32
Total ★
31
32
33
34
35
36
37
38
39
40
Bonus
7.42
7.54
7.65
7.77
7.88
8.00
8.10
8.21
8.32
8.43
0.7 Modifier
Anti-Air from HA, MG, and AAFD.
Total ★
1
2
3
4
5
6
7
8
9
10
Bonus
0.70
0.98
1.21
1.40
1.56
1.71
1.85
1.97
2.10
2.21
Total ★
11
12
13
14
15
16
17
18
19
20
Bonus
3.21
3.42
3.56
3.70
3.83
3.95
4.07
4.20
4.31
4.42
Total ★
21
22
23
24
25
26
27
28
29
30
Bonus
5.55
5.68
5.81
5.93
6.05
6.17
6.30
6.41
6.52
6.64
Total ★
31
32
33
34
35
36
37
38
39
40
Bonus
7.79
7.91
8.03
8.15
8.27
8.40
8.51
8.62
8.74
8.85
0.75 Modifier
Firepower from SONARs and DCs.
Total ★
1
2
3
4
5
6
7
8
9
10
Bonus
0.75
1.06
1.29
1.50
1.67
1.83
1.98
2.12
2.25
2.37
Total ★
11
12
13
14
15
16
17
18
19
20
Bonus
3.51
3.67
3.82
3.96
4.10
4.24
4.37
4.50
4.62
4.74
Total ★
21
22
23
24
25
26
27
28
29
30
Bonus
5.95
6.08
6.22
6.36
6.49
6.62
6.75
6.87
6.99
7.11
Bonus
8.34
8.48
8.61
8.74
8.87
9.00
9.12
9.24
9.36
9.48
1.0 Modifier
Firepower from small and medium caliber guns, secondary (yellow) guns, MG, AAFD, AP shells, AA shells, landing craft, searchlights and anti-ground rockets.
Night Battle Power from small, medium and large caliber guns, secondary (yellow) guns, AAFD, torpedoes, AP shells, AA shells, landing craft, searchlights and anti-ground rockets.
Shelling Accuracy from small, medium and large caliber guns, secondary (yellow & green) guns, AAFD, and AA RADAR.
Total ★
1
2
3
4
5
6
7
8
9
10
Bonus
1.00
1.41
1.73
2.00
2.23
2.44
2.64
2.82
3.00
3.16
Total ★
11
12
13
14
15
16
17
18
19
20
Bonus
4.68
4.89
5.09
5.29
5.47
5.65
5.82
6.00
6.16
6.32
Total ★
21
22
23
24
25
26
27
28
29
30
Bonus
7.93
8.11
8.30
8.48
8.65
8.82
9.00
9.16
9.32
9.48
Total ★
31
32
33
34
35
36
37
38
39
40
Bonus
11.13
11.31
11.48
11.65
11.82
12.00
12.16
12.32
12.48
12.64
1.2 Modifier
Torpedo power from MG and torpedoes.
Line of Sight from carrier-based recons and seaplanes (recon & bomber).
Total ★
1
2
3
4
5
6
7
8
9
10
Bonus
1.20
1.69
2.07
2.40
2.68
2.93
3.17
3.39
3.60
3.79
Total ★
11
12
13
14
15
16
17
18
19
20
Bonus
5.62
5.87
6.11
6.34
6.56
6.78
6.99
7.20
7.39
7.58
Total ★
21
22
23
24
25
26
27
28
29
30
Bonus
9.52
9.74
9.96
10.18
10.38
10.59
10.80
10.99
11.18
11.38
Total ★
31
32
33
34
35
36
37
38
39
40
Bonus
13.35
13.57
13.78
13.98
14.19
14.40
14.59
14.78
14.98
15.17
1.25 Modifier
Line of Sight from RADARs (LOS & AA).
Total ★
1
2
3
4
5
6
7
8
9
10
Bonus
1.25
1.76
2.16
2.50
2.79
3.06
3.30
3.53
3.75
3.95
Total ★
11
12
13
14
15
16
17
18
19
20
Bonus
5.85
6.12
6.36
6.61
6.84
7.07
7.28
7.50
7.70
7.90
Total ★
21
22
23
24
25
26
27
28
29
30
Bonus
9.92
10.14
10.37
10.60
10.82
11.03
11.25
11.45
11.65
11.85
Total ★
31
32
33
34
35
36
37
38
39
40
Bonus
13.91
14.14
14.35
14.57
14.78
15.00
15.20
15.40
15.60
15.81
1.3 Modifier
ASW Accuracy from SONARs.
Total ★
1
2
3
4
5
6
7
8
9
10
Bonus
1.30
1.83
2.25
2.60
2.90
3.18
3.43
3.67
3.90
4.11
Total ★
11
12
13
14
15
16
17
18
19
20
Bonus
6.09
6.36
6.62
6.87
7.11
7.35
7.57
7.80
8.01
8.22
Total ★
21
22
23
24
25
26
27
28
29
30
Bonus
10.31
10.55
10.79
11.03
11.25
11.47
11.70
11.991
12.12
12.33
Total ★
31
32
33
34
35
36
37
38
39
40
Bonus
14.47
14.70
14.93
15.15
15.37
15.60
15.81
16.02
16.23
16.44
1.5 Modifier
Firepower from large caliber main guns.
Fleet Anti-Air from AA RADARs.
Torpedo evasion from sonars.
Evasion from engines.
Total ★
1
2
3
4
5
6
7
8
9
10
Bonus
1.50
2.12
2.59
3.00
3.35
3.67
3.96
4.24
4.50
4.74
Total ★
11
12
13
14
15
16
17
18
19
20
Bonus
7.02
7.34
7.64
7.93
8.21
8.48
8.74
9.00
9.24
9.48
Total ★
21
22
23
24
25
26
27
28
29
30
Bonus
11.90
12.17
12.45
12.72
12.98
13.24
13.50
13.74
13.98
14.23
Total ★
31
32
33
34
35
36
37
38
39
40
Bonus
16.69
16.97
17.22
17.48
17.74
18.00
18.24
18.48
18.73
18.97
2.0 Modifier
Torpedo accuracy from MG and torpedoes.
Fleet Anti-Air from AAFD.
Total ★
1
2
3
4
5
6
7
8
9
10
Bonus
2.00
2.82
3.46
4.00
4.47
4.89
5.29
5.65
6.00
6.32
Total ★
11
12
13
14
15
16
17
18
19
20
Bonus
9.37
9.79
10.19
10.58
10.94
11.31
11.65
12.00
12.32
12.64
Total ★
21
22
23
24
25
26
27
28
29
30
Bonus
15.87
16.23
16.60
16.97
17.31
17.65
18.00
18.32
18.64
18.97
Total ★
31
32
33
34
35
36
37
38
39
40
Bonus
22.26
22.62
22.97
23.31
23.65
24.00
24.32
24.64
24.97
25.29
3.0 Modifier
Fleet Anti-Air from high angle guns.
Total ★
1
2
3
4
5
6
7
8
9
10
Bonus
3.00
4.24
5.19
6.00
6.70
7.34
7.93
8.48
9.00
9.48
Total ★
11
12
13
14
15
16
17
18
19
20
Bonus
14.05
14.69
15.28
15.87
16.42
16.97
17.48
18.00
18.48
18.97
Total ★
21
22
23
24
25
26
27
28
29
30
Bonus
23.81
24.35
24.90
25.45
25.97
26.48
27.00
27.48
27.97
28.46
Total ★
31
32
33
34
35
36
37
38
39
40
Bonus
33.39
33.94
34.45
34.97
35.48
36.00
36.48
36.97
37.46
37.94
1.0+1.5 Modifier
Bonus Firepower for Battleships with 2 main guns and 1 AP. Highlights indicate threshold changes.
from SONARs and DCs.
from HA, MG, and AAFD.
from SONARs and DCs.
from small, medium and large caliber guns, secondary (yellow) guns, AAFD, torpedoes, AP shells, AA shells, landing craft, searchlights and anti-ground rockets.
from small, medium and large caliber guns, secondary (yellow & green) guns, AAFD, and AA RADAR.
from MG and torpedoes.
from carrier-based recons and seaplanes (recon & bomber).
from sonars.