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Combat/Opening Anti-Submarine Warfare

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Revision as of 05:10, 25 September 2019 by Leyana (talk | contribs)
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Introduction

During the opening phases of combat, ships which meet certain requirements are able to perform opening ASW attacks. These attacks are valuable because they have the opportunity to sink submarines before they get the chance to perform opening torpedoes.

Overview

1. All ships with an ASW stat are capable of performing OASW.

  • Theoretically any ship capable of ASW is able to perform OASW but no equipment exists that allows normal CVL, CAV and BBV to hit the 100 ASW threshold.

2. Upgrades to ASW equipment are not counted towards the thresholds for triggering OASW.

3. OASW attacks are performed in range order.

  • Attacks from ships with the same range are random.

4. Damage is calculated the same way as normal ASW.


Trigger Requirements

Ship Requirement
All ASW capable ships
  • 100≤ ASW
Destroyer Escorts

Either:

  • 60≤ ASW with sonar
  • 75≤ ASW with equipment that has 4≤ ASW
Isuzu Kai Ni
Tatsuta Kai Ni
Jervis Kai
Janus Kai
Samuel B. Roberts Kai
Fletcher
Johnston
  • Default OASW regardless of ASW stat or equipment.
Taiyou
Shinyou
Gambier Bay
Zuihou Kai Ni B

Have both:

  • 65≤ ASW
  • At least 1 plane with 7≤ ASW
Taiyou Kai/Kai Ni
Shinyou Kai Kai Ni
  • 65≤ ASW
Hyuuga Kai Ni

Either:

ASW Requirement Chart

The minimum level for OASW can be calculated using:


[math]\displaystyle{ \text{Level}_\text{min} = \bigl\lceil \left( \left(\text{OASW}-\text{ASW}_\text{equip} \right) - \text{OASW}_\text{min} \right) \times \frac{99}{\text{OASW}_\text{max}-\text{OASW}_\text{min}} \bigr\rceil }[/math]

  • [math]\displaystyle{ \text{OASW}_\text{min} }[/math] is the minimum ASW of the ship as noted in the tables below.
  • [math]\displaystyle{ \text{OASW}_\text{max} }[/math] is the maximum ASW of the ship as noted in the tables below.
  • [math]\displaystyle{ \text{ASW}_\text{equip} }[/math] is the total base ASW provided by equipment.
  • [math]\displaystyle{ \text{OASW} }[/math] is the relevant OASW threshold.
    • [math]\displaystyle{ 60 }[/math] for DEs with sonars.
    • [math]\displaystyle{ 75 }[/math] for DEs without sonars and ASW equipment that have 4≤ ASW.
    • [math]\displaystyle{ 65 }[/math] for CVLs with 7≤ ASW planes OR Taiyou/Shinyou Kai/Kai Ni
    • [math]\displaystyle{ 100 }[/math] for all other ships.


The following apply to the tables below:


Destroyers
Ship Min ASW Max ASW
3 Slots 2 Slots 1 Slot 4 Slots
T4S/T4S/T4S
(36)
T4S/T4S/T3CP
(32)
T3S/T3S/T3S
(30)
T3S/T3S/T3DCP
(28)
T3S/T3DCP/T2DC
(25)
T4S/T4S
(24)
T3S/T3S
T4S/T3DCP
(20)
T3S/T3DCP
(18)
T4S
(12)
T3S
(10)
T4S/T4S/T4S/T3DCP
(44)
T3S/T3S/T3S/T3DCP
(38)
T3S/T3S/T3DCP/T2DC
(35)
Asashio Kai Ni D 45 89 43 52 57 61 68 70 79 84 97 102 - - -
Urakaze D Kai 45 88 44 53 58 63 70 72 81 86 99 104 - - -
Tanikaze D Kai 44 86 48 57 62 66 74 76 85 90 104 109 - - -
Maestrale Kai
Libeccio Kai
40 80 60 70 75 80 87 90 99 104 119 124 - - -
Grecale Kai 38 79 63 73 78 83 90 92 102 107 121 126 - - -
Shiratsuyu Kai Ni 30 83 64 71 75 79 85 86 94 98 109 113 - - -
Arare Kai Ni 33 81 64 73 77 81 87 89 97 102 114 118 - - -
Umikaze Kai Ni 28 82 66 74 77 81 87 88 96 99 110 114 - - -
Satsuki Kai Ni
Fumizuki Kai Ni
30 81 66 74 78 82 88 90 98 101 113 117 - - -
Asashimo Kai 35 79 66 75 79 84 90 93 102 106 120 124 - - -
Kazagumo Kai Ni 29 78 71 79 83 87 93 95 104 108 120 124 - - -
Verniy
Yuugumo Kai Ni
30 77 72 81 85 89 95 97 106 110 123 127 - - -
Tashkent Kai 40 73 72 84 90 96 105 108 120 126 144 150 48 66 75
Murasame Kai Ni 29 77 73 81 85 89 95 97 106 110 122 126 - - -
Shigure Kai Ni 31 76 73 82 86 91 97 99 108 113 126 130 - - -
Ushio Kai Ni 32 75 74 83 88 93 99 102 111 116 129 134 - - -
Hamakaze B Kai 32 72 80 90 95 99 107 109 119 124 139 144 - - -
Makigumo Kai Ni
Kishinami Kai
Akizuki Kai
Teruzuki Kai
Hatsuzuki Kai
30 72 81 90 95 99 107 109 118 123 137 142 - - -
Hatsushimo Kai Ni 28 72 81 90 95 99 106 108 117 122 135 140 - - -
Suzutsuki Kai 28 71 83 93 97 102 109 111 120 125 139 143 - - -
Harukaze Kai 22 72 84 92 96 99 105 107 115 119 131 135 - - -
Okinami Kai 32 70 84 94 99 105 113 115 126 131 146 152 - - -
Kuroshio Kai Ni
Isokaze B Kai
31 70 84 94 99 105 112 115 125 130 145 150 - - -
Z1 Zwei
Z3 Zwei
37 69 84 96 103 109 118 121 134 140 158 164 - - -
Arashi Kai 30 70 85 95 99 104 112 114 124 129 144 149 - - -
Kamikaze Kai 24 70 87 95 99 104 110 112 121 125 138 143 - - -
Hatakaze Kai 21 70 87 95 99 104 110 112 120 124 136 140 - - -
Hatsuharu Kai Ni
Yamakaze Kai
30 69 87 97 102 107 115 117 127 132 148 153 - - -
Mutsuki Kai Ni
Murakumo Kai Ni
Yuudachi Kai Ni
28 69 87 97 102 107 114 116 126 131 145 150 - - -
Matsukaze Kai 20 70 88 96 99 103 109 111 119 123 135 139 - - -
Kisaragi Kai Ni 27 69 88 97 102 107 114 116 125 130 144 149 - - -
Hayanami Kai 26 69 88 97 102 106 113 116 125 129 143 148 - - -
Shiranui Kai Ni
Naganami Kai Ni
30 68 89 99 105 110 118 120 131 136 152 157 - - -
Kasumi Kai Ni/B
Nowaki Kai
Hagikaze Kai
28 68 90 99 104 109 117 119 129 134 149 154 - - -
Maikaze Kai 27 68 90 99 104 109 116 119 128 133 148 153 - - -
Fubuki Kai Ni 26 68 90 99 104 109 116 118 128 132 147 151 - - -
Kagerou Kai Ni 30 67 91 102 108 113 121 124 134 140 156 161 - - -
Asakaze Kai 18 68 92 99 103 107 113 115 123 127 139 143 - - -
Takanami Kai
Hayashimo Kai
Kiyoshimo Kai
29 67 92 102 107 113 120 123 133 139 154 159 - - -
Oyashio Kai 27 67 92 102 107 112 119 122 132 137 151 156 - - -
Akatsuki Kai Ni
Fujinami Kai
28 66 94 105 110 115 123 126 136 141 157 162 - - -
Hamanami Kai 28 65 97 108 113 118 126 129 140 145 161 166 - - -
Uzuki Kai 21 65 97 106 111 115 122 124 133 138 151 156 - - -
Yamagumo Kai
Hatsukaze Kai
Akigumo Kai
27 64 99 110 116 121 129 132 142 148 164 169 - - -
Ooshio Kai Ni
Tokitsukaze Kai
26 64 99 110 115 120 128 131 141 146 162 167 - - -
Ayanami Kai Ni
Kawakaze Kai Ni
25 63 102 113 118 123 131 133 144 149 165 170 - - -
Minazuki Kai 19 61 107 116 121 125 132 135 144 149 163 168 - - -
Michishio Kai Ni 26 60 111 123 129 134 143 146 158 164 - - - - -
Yayoi Kai
Nagatsuki Kai
Kikuzuki Kai
Mikazuki Kai
Mochizuki Kai
18 59 112 121 126 131 138 141 150 155 170 174 - - -
Asashio Kai Ni
Arashio Kai Ni
26 59 114 126 132 138 147 150 162 168 - - - - -
All other destroyers 24 59 114 125 131 136 145 148 159 165 - - - - -
Amatsukaze Kai 28 59 115 128 135 141 151 154 167 173 - - - - -
Yukikaze Kai
Shimakaze Kai
27 59 115 127 134 140 149 152 164 171 - - - - -
Shimakaze Kai 27 59 115 127 134 140 149 152 164 171 - - - - -
Minegumo Kai 24 58 117 129 134 140 149 152 164 169 - - - - -