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| The opening anti-submarine attack (OASW) can be performed by any ship with displayed ASW value of 100 or greater (ship's ASW stat + ''any'' equipment ASW stats, not counting equipment [[improvements]]) and at least one [[sonar]]. | | The opening anti-submarine attack (OASW) can be performed by any ship with displayed ASW value of 100 or greater (ship's ASW stat + ''any'' equipment ASW stats, not counting equipment [[improvements]]) and at least one [[sonar]]. |
| *{{ShipLink|Isuzu Kai Ni}} and {{ShipLink|Tatsuta Kai Ni}} can always perform OASW, even with less than 100 displayed ASW or without any ASW equipment. | | *{{ShipLink|Isuzu Kai Ni}} and {{ShipLink|Tatsuta Kai Ni}} can always perform OASW, even with less than 100 displayed ASW or without any ASW equipment. |
| + | *{{ShipLink|Jervis Kai}} is capable of performing OASW when equipped with a Sonar, regardless of her ASW stat. |
| *{{ShipLink|Taiyou}} can perform OASW with [[Type 97 Torpedo Bomber (931 Air Group)]] or [[Tenzan (931 Air Group)]] and displayed ASW of 65 or greater. For {{ShipLink|Taiyou/Kai}} and {{ShipLink|Taiyou/Kai Ni}} the bombers are not required, 65 displayed ASW is sufficient (however, if she is not using a torpedo or dive bomber with ASW stat, she will be able to perform OASW attack but will be unable to perform ASW attacks in the shelling phase). OASW attacks will be performed even if she is at medium damage or all her planes were shot down. | | *{{ShipLink|Taiyou}} can perform OASW with [[Type 97 Torpedo Bomber (931 Air Group)]] or [[Tenzan (931 Air Group)]] and displayed ASW of 65 or greater. For {{ShipLink|Taiyou/Kai}} and {{ShipLink|Taiyou/Kai Ni}} the bombers are not required, 65 displayed ASW is sufficient (however, if she is not using a torpedo or dive bomber with ASW stat, she will be able to perform OASW attack but will be unable to perform ASW attacks in the shelling phase). OASW attacks will be performed even if she is at medium damage or all her planes were shot down. |
| *[[:Category:Coastal Defense Ships|Coastal Defense Ships]] can perform OASW with displayed ASW of 60 or greater. With displayed ASW of 75 or greater and equipment ASW of 4 or greater they can perform OASW without a sonar equipped. | | *[[:Category:Coastal Defense Ships|Coastal Defense Ships]] can perform OASW with displayed ASW of 60 or greater. With displayed ASW of 75 or greater and equipment ASW of 4 or greater they can perform OASW without a sonar equipped. |
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| *If several ships fulfill the requirements, then they all can perform preemptive attacks, each attacking a random submarine in the enemy fleet. The firing order is determined by the range order, similar to the First Shelling Phase. The order for ships of the same range is random. | | *If several ships fulfill the requirements, then they all can perform preemptive attacks, each attacking a random submarine in the enemy fleet. The firing order is determined by the range order, similar to the First Shelling Phase. The order for ships of the same range is random. |
| *The damage follows the [[Damage Calculation|usual ASW formula]] and is affected by the usual modifiers (formation, engagement, health, ammo), as well as equipment [[improvements]]. | | *The damage follows the [[Damage Calculation|usual ASW formula]] and is affected by the usual modifiers (formation, engagement, health, ammo), as well as equipment [[improvements]]. |
− | }} | + | }}The following tables show how much base ASW is needed (in form of required ship level) to enable OASW with a given equipment setup (T4: [[Type 4 Passive Sonar]], T3: [[Type 3 Active Sonar]], DC: [[Type 3 Depth Charge Projector]]). |
− | The following tables show how much base ASW is needed (in form of required ship level) to enable OASW with a given equipment setup (T4: [[Type 4 Passive Sonar]], T3: [[Type 3 Active Sonar]], DC: [[Type 3 Depth Charge Projector]]). | |
| <!-- | | <!-- |
| function group(array) { | | function group(array) { |
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| // gen_row("Asashio Kai Ni D", 85, 45, 89); | | // gen_row("Asashio Kai Ni D", 85, 45, 89); |
| --> | | --> |
− | {| class="wikitable typography-xl-optout mw-collapsible {{#if:{{{collapsed|}}}|mw-collapsed|}}" style="width:100%;text-align:center;" | + | {|{{#if:{{{collapsed|}}}|mw-collapsed|}} |
| + | |
| + | |
| |- | | |- |
| !colspan="12"|[[DD]] | | !colspan="12"|[[DD]] |
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| !colspan="2"|1 Slot | | !colspan="2"|1 Slot |
| |- | | |- |
− | !T4/T4/T4<br>36 + 64 | + | !T4/T4/T4<br />36 + 64 |
− | !T4/T4/T3<br>34 + 66 | + | !T4/T4/T3<br />34 + 66 |
− | !style="color:red"|T4/T4/DC<br>32 + 68 | + | !style="color:red"|T4/T4/DC<br />32 + 68 |
− | !style="color:red"|T4/T3/DC<br>30 + 70 | + | !style="color:red"|T4/T3/DC<br />30 + 70 |
− | !style="color:red"|T3/T3/DC<br>28 + 72 | + | !style="color:red"|T3/T3/DC<br />28 + 72 |
− | !T4/T4<br>24 + 76 | + | !T4/T4<br />24 + 76 |
− | !T4/T3<br>22 + 78 | + | !T4/T3<br />22 + 78 |
− | !style="color:red"|T4/DC<br>20 + 80 | + | !style="color:red"|T4/DC<br />20 + 80 |
− | !style="color:red"|T3/DC<br>18 + 82 | + | !style="color:red"|T3/DC<br />18 + 82 |
− | !T4<br>12 + 88 | + | !T4<br />12 + 88 |
− | !T3<br>10 + 90 | + | !T3<br />10 + 90 |
| |- | | |- |
| |{{ShipLink|Asashio Kai Ni D|text=Asashio K2D}} | | |{{ShipLink|Asashio Kai Ni D|text=Asashio K2D}} |
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| |style="background:#ffcdd2"|135 | | |style="background:#ffcdd2"|135 |
| |- | | |- |
− | |{{ShipLink|Akizuki Kai}}<br>{{ShipLink|Teruzuki Kai}}<br>{{ShipLink|Hatsuzuki Kai}} | + | |{{ShipLink|Akizuki Kai}}<br />{{ShipLink|Teruzuki Kai}}<br />{{ShipLink|Hatsuzuki Kai}} |
| |style="background:#c8e6c9"|81 | | |style="background:#c8e6c9"|81 |
| |style="background:#c8e6c9"|85 | | |style="background:#c8e6c9"|85 |
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| |style="background:#ffcdd2"|143 | | |style="background:#ffcdd2"|143 |
| |- | | |- |
− | |{{ShipLink|Yuudachi Kai Ni|text=Yuudachi K2}}<br>{{ShipLink|Murakumo Kai Ni|text=Murakumo K2}}<br>{{ShipLink|Hatsushimo Kai Ni|text=Hatsushimo K2}}<br>{{ShipLink|Mutsuki Kai Ni|text=Mutsuki K2}} | + | |{{ShipLink|Yuudachi Kai Ni|text=Yuudachi K2}}<br />{{ShipLink|Murakumo Kai Ni|text=Murakumo K2}}<br />{{ShipLink|Hatsushimo Kai Ni|text=Hatsushimo K2}}<br />{{ShipLink|Mutsuki Kai Ni|text=Mutsuki K2}} |
| |style="background:#c8e6c9"|87 | | |style="background:#c8e6c9"|87 |
| |style="background:#ffe0b2"|92 | | |style="background:#ffe0b2"|92 |
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| |style="background:#cfd8dc"|N/A | | |style="background:#cfd8dc"|N/A |
| |- | | |- |
− | |{{ShipLink|Ayanami Kai Ni|text=Ayanami K2}}<br>{{ShipLink|Kawakaze Kai Ni|text=Kawakaze K2}} | + | |{{ShipLink|Ayanami Kai Ni|text=Ayanami K2}}<br />{{ShipLink|Kawakaze Kai Ni|text=Kawakaze K2}} |
| |style="background:#ffcdd2"|102 | | |style="background:#ffcdd2"|102 |
| |style="background:#ffcdd2"|107 | | |style="background:#ffcdd2"|107 |
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| |style="background:#cfd8dc"|N/A | | |style="background:#cfd8dc"|N/A |
| |- | | |- |
− | |{{ShipLink|Shimakaze Kai}}<br>{{ShipLink|Yukikaze Kai}} | + | |{{ShipLink|Shimakaze Kai}}<br />{{ShipLink|Yukikaze Kai}} |
| |style="background:#ffcdd2"|115 | | |style="background:#ffcdd2"|115 |
| |style="background:#ffcdd2"|121 | | |style="background:#ffcdd2"|121 |
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| |style="background:#cfd8dc"|N/A | | |style="background:#cfd8dc"|N/A |
| |} | | |} |
− | {| class="wikitable typography-xl-optout mw-collapsible {{#if:{{{collapsed|}}}|mw-collapsed|}}" style="width:100%;text-align:center;" | + | {|{{#if:{{{collapsed|}}}|mw-collapsed|}} |
| + | |
| + | |
| |- | | |- |
| !colspan="12"|[[CL]]/[[CLT]] | | !colspan="12"|[[CL]]/[[CLT]] |
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| !colspan="2"|1 Slot | | !colspan="2"|1 Slot |
| |- | | |- |
− | !T4/T4/T4<br>36 + 64 | + | !T4/T4/T4<br />36 + 64 |
− | !T4/T4/T3<br>34 + 66 | + | !T4/T4/T3<br />34 + 66 |
− | !style="color:red"|T4/T4/DC<br>32 + 68 | + | !style="color:red"|T4/T4/DC<br />32 + 68 |
− | !style="color:red"|T4/T3/DC<br>30 + 70 | + | !style="color:red"|T4/T3/DC<br />30 + 70 |
− | !style="color:red"|T3/T3/DC<br>28 + 72 | + | !style="color:red"|T3/T3/DC<br />28 + 72 |
− | !T4/T4<br>24 + 76 | + | !T4/T4<br />24 + 76 |
− | !T4/T3<br>22 + 78 | + | !T4/T3<br />22 + 78 |
− | !style="color:red"|T4/DC<br>20 + 80 | + | !style="color:red"|T4/DC<br />20 + 80 |
− | !style="color:red"|T3/DC<br>18 + 82 | + | !style="color:red"|T3/DC<br />18 + 82 |
− | !T4<br>12 + 88 | + | !T4<br />12 + 88 |
− | !T3<br>10 + 90 | + | !T3<br />10 + 90 |
| |- | | |- |
| |{{ShipLink|Kinu Kai Ni|text=Kinu K2}} | | |{{ShipLink|Kinu Kai Ni|text=Kinu K2}} |
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| |style="background:#ffcdd2"|115 | | |style="background:#ffcdd2"|115 |
| |- | | |- |
− | |{{ShipLink|Agano Kai}}<br>{{ShipLink|Noshiro Kai}}<br>{{ShipLink|Yahagi Kai}} | + | |{{ShipLink|Agano Kai}}<br />{{ShipLink|Noshiro Kai}}<br />{{ShipLink|Yahagi Kai}} |
| |style="background:#c8e6c9"|68 | | |style="background:#c8e6c9"|68 |
| |style="background:#c8e6c9"|71 | | |style="background:#c8e6c9"|71 |
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| |style="background:#ffcdd2"|124 | | |style="background:#ffcdd2"|124 |
| |- | | |- |
− | |{{ShipLink|Kitakami Kai Ni|text=Kitakami K2}}<br>{{ShipLink|Ooi Kai Ni|text=Ooi K2}} | + | |{{ShipLink|Kitakami Kai Ni|text=Kitakami K2}}<br />{{ShipLink|Ooi Kai Ni|text=Ooi K2}} |
| |style="background:#c8e6c9"|71 | | |style="background:#c8e6c9"|71 |
| |style="background:#c8e6c9"|75 | | |style="background:#c8e6c9"|75 |
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| |style="background:#ffcdd2"|120 | | |style="background:#ffcdd2"|120 |
| |- | | |- |
− | |{{ShipLink|Kuma Kai}}<br>{{ShipLink|Tama Kai}}<br>{{ShipLink|Natori Kai}} | + | |{{ShipLink|Kuma Kai}}<br />{{ShipLink|Tama Kai}}<br />{{ShipLink|Natori Kai}} |
| |style="background:#c8e6c9"|72 | | |style="background:#c8e6c9"|72 |
| |style="background:#c8e6c9"|76 | | |style="background:#c8e6c9"|76 |
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| |style="background:#ffcdd2"|143 | | |style="background:#ffcdd2"|143 |
| |- | | |- |
− | |{{ShipLink|Tenryuu Kai}}<br>{{ShipLink|Tatsuta Kai}} | + | |{{ShipLink|Tenryuu Kai}}<br />{{ShipLink|Tatsuta Kai}} |
| |style="background:#c8e6c9"|88 | | |style="background:#c8e6c9"|88 |
| |style="background:#ffe0b2"|93 | | |style="background:#ffe0b2"|93 |
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| |style="background:#ffcdd2"|146 | | |style="background:#ffcdd2"|146 |
| |} | | |} |
− | {| class="wikitable typography-xl-optout mw-collapsible {{#if:{{{collapsed|}}}|mw-collapsed|}}" style="width:100%;text-align:center;" | + | {|{{#if:{{{collapsed|}}}|mw-collapsed|}} |
| + | |
| + | |
| |- | | |- |
| !colspan="7"|4 Slots [[CL]]/[[CT]] | | !colspan="7"|4 Slots [[CL]]/[[CT]] |
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| !colspan="6"|4 Slots | | !colspan="6"|4 Slots |
| |- | | |- |
− | !T4/T4/T4/T4<br>48 + 52 | + | !T4/T4/T4/T4<br />48 + 52 |
− | !T4/T4/T4/T3<br>46 + 54 | + | !T4/T4/T4/T3<br />46 + 54 |
− | !style="color:red"|T4/T4/T4/DC<br>44 + 56 | + | !style="color:red"|T4/T4/T4/DC<br />44 + 56 |
− | !style="color:red"|T4/T4/T3/DC<br>42 + 58 | + | !style="color:red"|T4/T4/T3/DC<br />42 + 58 |
− | !style="color:red"|T4/T3/T3/DC<br>40 + 60 | + | !style="color:red"|T4/T3/T3/DC<br />40 + 60 |
− | !style="color:red"|T3/T3/T3/DC<br>38 + 62 | + | !style="color:red"|T3/T3/T3/DC<br />38 + 62 |
| |- | | |- |
− | |{{ShipLink|Yuubari Kai}}<br>{{ShipLink|Kashima Kai}} | + | |{{ShipLink|Yuubari Kai}}<br />{{ShipLink|Kashima Kai}} |
| |style="background:#c8e6c9"|62 | | |style="background:#c8e6c9"|62 |
| |style="background:#c8e6c9"|66 | | |style="background:#c8e6c9"|66 |
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| !colspan="5"|3 Slots | | !colspan="5"|3 Slots |
| |- | | |- |
− | !T4/T4/T4<br>36 + 64 | + | !T4/T4/T4<br />36 + 64 |
− | !T4/T4/T3<br>34 + 66 | + | !T4/T4/T3<br />34 + 66 |
− | !style="color:red"|T4/T4/DC<br>32 + 68 | + | !style="color:red"|T4/T4/DC<br />32 + 68 |
− | !style="color:red"|T4/T3/DC<br>30 + 70 | + | !style="color:red"|T4/T3/DC<br />30 + 70 |
− | !style="color:red"|T3/T3/DC<br>28 + 72 | + | !style="color:red"|T3/T3/DC<br />28 + 72 |
| |- | | |- |
− | |{{ShipLink|Yuubari Kai}}<br>{{ShipLink|Kashima Kai}} | + | |{{ShipLink|Yuubari Kai}}<br />{{ShipLink|Kashima Kai}} |
| |style="background:#c8e6c9"|88 | | |style="background:#c8e6c9"|88 |
| |style="background:#ffe0b2"|93 | | |style="background:#ffe0b2"|93 |
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| !colspan="2"|1 Slot | | !colspan="2"|1 Slot |
| |- | | |- |
− | !T4/T4<br>24 + 76 | + | !T4/T4<br />24 + 76 |
− | !T4/T3<br>22 + 78 | + | !T4/T3<br />22 + 78 |
− | !style="color:red"|T4/DC<br>20 + 80 | + | !style="color:red"|T4/DC<br />20 + 80 |
− | !style="color:red"|T3/DC<br>18 + 82 | + | !style="color:red"|T3/DC<br />18 + 82 |
− | !T4<br>12 + 88 | + | !T4<br />12 + 88 |
− | !T3<br>10 + 90 | + | !T3<br />10 + 90 |
| |- | | |- |
− | |{{ShipLink|Yuubari Kai}}<br>{{ShipLink|Kashima Kai}} | + | |{{ShipLink|Yuubari Kai}}<br />{{ShipLink|Kashima Kai}} |
| |style="background:#ffcdd2"|115 | | |style="background:#ffcdd2"|115 |
| |style="background:#ffcdd2"|119 | | |style="background:#ffcdd2"|119 |