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→World 6-4: 中部北海域ピーコック島沖 Central Northern Offshore Sea of Peacock Island
| map = Map6-4.png
| map = Map6-4.png
| difficulty = ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆
| difficulty = ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆
| item =
| item = -
| exp = Varies
| exp = Varies
| code = 離島再攻略作戦 (Island Recapture Operation)
| code = 離島再攻略作戦 (Island Recapture Operation)
| jptext = 水雷戦隊を旗艦とした攻略部隊または空母最大2隻を擁する機動部隊による中部海域離島攻略作戦を発動！艦隊、出撃せよ！
| jptext = 水雷戦隊を旗艦とした攻略部隊または空母最大2隻を擁する機動部隊による中部海域離島攻略作戦を発動！艦隊、出撃せよ！
| entext = Organize a unit to undertake an operation to capture the Island. Form a fleet consisting of a maximum of 2 Aircraft Carrier or a torpedo squadron flagship! Fleet, set sail!
| entext = Organize a unit to undertake an operation to capture the Island. Form a fleet consisting of a maximum of 2 Aircraft Carrier or a torpedo squadron flagship! Fleet, set sail!
| aircon = {{AirControlSystem
| aircon =
| Map = 6-4 West Fast Fleet
{{AirControlSystem
| Fleet = CL (flagship) (F)BB(V) 3DD CAV
| Map = 6-4 West Fast fleet
| Route = B-D-C-F-N
| Fleet = 1CL(flagship), 1(F)BB(V), 3DD, 1CAV
| Route = {{MapRoute|B|red|D|pink|C|red|F|pink|N|red}}
| AS = 168
| AS = 168
| Notes = Fleet speed must be Fast.
| Notes = Fast
}}
}}
{{AirControlSystem
{{AirControlSystem
| Map = 6-4 West "Touch Fleet"
| Map = 6-4 West "Touch fleet"
| Fleet = {{ShipLink|Nagato/Kai Ni}} {{ShipLink|Mutsu/Kai Ni}} CL/CAV 2DD {{ShipLink|Akitsushima}}
| Fleet = {{ShipLink|Nagato/Kai Ni}}, {{ShipLink|Mutsu/Kai Ni}}, 1CL/CAV, 2DD, {{ShipLink|Akitsushima}}
| Route = A-D-C-F-N
| Route = {{MapRoute|A|red|D|pink|C|red|F|pink|N|red}}
| AS = 168
| AS = 168
| Notes = Named ships are mandatory.
| Notes = Named ships are mandatory.
**Fleet contains 3 CA(V)
**Fleet contains 3 CA(V)
**Fleet contains DD ≤ 1
**Fleet contains DD ≤ 1
**Fleet contains 2 (F)BB(V) ('''Ignored if you bring [[Nagato|Nagato Kai Ni]] and [[Mutsu|Mutsu Kai Ni]]''')
**Fleet contains 2 (F)BB(V)
***'''Ignored if you bring [[Nagato|Nagato Kai Ni]] and [[Mutsu|Mutsu Kai Ni]]'''
*Meet '''ALL''' of the following to go to B
*Meet '''ALL''' of the following to go to B
**'''FAST''' fleet
**'''FAST''' fleet
'''Requires destroying the [[Isolated Island Princess]] 5 times to clear.'''
'''Requires destroying the [[Isolated Island Princess]] 5 times to clear.'''
<br/>
<br/>
This map features '''multiple starting zone positions''' which were introduced in the [[Winter 2016 Event]].
This map features '''multiple starting zone positions'''.
*Fleet consisting of a Torpedo Squadron (i.e. mostly DDs or CL and DDs) will start on the left side of the map
*Fleet consisting of a Torpedo Squadron (i.e. mostly CLs and DDs) will start on the West side of the map.
*Existence of any carrier will start on the east, as will any two battleships, or three CA(V)s (Obviously [[Nagato]] and [[Mutsu]] Kai Ni is the exception)
*Existence of any carrier, 2BB, or 3CA(V)s will start on the East ([[Nagato Kai Ni]] + [[Mutsu Kai Ni]] is the exception)
*Not having two destroyers will also start on the west
*Not having 2DDs will also start on the West
*You can bring no more than 2 CV(L)(B)
*You cannot bring more than 2(F)BBs or 2CV(L)s.
===Regarding Boss Fleet===
====Regarding Boss fleet====
*Boss Fleet is heavily affected by your HQ level.
*Boss Fleet is heavily affected by your HQ level.
**Admirals below HQ level 103 will not feature a 6-enemy composition in the boss composition outside of the last kill, but will have a chance of appearing if your HQ level is '''103 or higher'''.
**Admirals below HQ level 103 will not feature a 6-enemy composition in the boss composition outside of the last kill, but will have a chance of appearing if your HQ level is '''103 or higher'''.
**Admirals below HQ level 113 have a chance of rolling a 5-enemy composition with the Late Model DDs (This is the easiest comp). But once your HQ is '''113 or higher''', this composition will disappear completely and can no longer be rolled.
**Admirals below HQ level 113 have a chance of rolling a 5-enemy composition with the Late Model DDs (This is the easiest comp). But once your HQ is '''113 or higher''', this composition will disappear completely and can no longer be rolled.
*Boss fleet's flagship is the [[Isolated Island Princess]]
*Boss fleet's flagship is the [[Isolated Island Princess]]
**Isolated Hime will usually have [[Battery Imp]]s and [[Supply Depot Princess]] with her.
**[[Battery Imp]]s and [[Supply Depot Princess]] are escorting her.
**Dev tweet says [[Battery Imp]]s are immune to {{EquipmentLink|Type 3 Shell|Type 3 Shell Kai|text=AA Shells}} but there are many reports of CAs and BBs doing high damage to them in yasen.
**Using {{AntiGroundArtillery}}{{EquipmentLink|WG42 (Wurfgerät 42)|Shipborne Model Type 4 20cm Anti-ground Rocket Launcher|Type 4 20cm Anti-ground Rocket Launcher (Concentrated Deployment)|text=Rocket Launchers}}, {{LandingCraft}}'''Landing Crafts''' ({{EquipmentLink|Daihatsu Landing Craft (Type 89 Medium Tank & Landing Force)|Toku Daihatsu Landing Craft + 11th Tank Regiment|Daihatsu Landing Craft (Panzer II/North African Specification)|M4A1 DD|text=landing tanks}}, {{EquipmentLink|Armed Daihatsu|Soukoutei (Armored Boat Class)|text=armed boat}}, or {{EquipmentLink|Daihatsu Landing Craft|Toku Daihatsu Landing Craft|text=landing crafts}}), and {{Amphibious Tank}}{{EquipmentLink|Special Type 2 Amphibious Tank|text=Tanks}} will do decent damage to them, especially if arranged in Nuke set-ups, where stacking them can do a lot of damage to [[Supply Depot Princess]] and [[Battery Imp]].
**If you have enough '''Rocket Launchers''' then you may want to use a ''4 slots CL'' and equip her with 2 of them as they stack and can deliver severe damage and can easily one-shot an Imp or one of the Hime.
**If you have enough '''Rocket Launchers''' then you may want to use a ''4 slots CL'' and equip her with 2 of them as they stack and can deliver severe damage and can easily one-shot an Imp or one of the Hime.
**Stacking '''Tanks''' and '''landing tanks''' or '''armed boat''' upgraded with '''Rocket Launchers''' can do a lot of damage to [[Supply Depot Princess]] and [[Battery Imp]].
**The use of {{GreenAmmo}}{{EquipmentLink|Type 3 Shell|Type 3 Shell Kai|text=AA Shells}} is debated, but they might also deal more damages to Battery Imps.
===Regarding [[Land-Based Air Squadron]]s===
====Regarding [[Land-Based Air Squadron]]s====
See the unlocking steps here: ''[[Land-Based_Air_Squadron#Unlocking|LBAS Unlocking]] ''
*You are permitted to use 1 [[Land-Based Air Squadron]].
*You are permitted to use 1 [[Land-Based Air Squadron]].
*There is no air raid on this map.
*There is no air raid on this map.
*Upon completing the quest B80 and F43, you will earn a Construction Team to gain access to your [[Land-Based Air Squadron]], which is '''highly recommended''' to help simplify the battle on the boss node for this map.
*Upon completing the quest [[Quests#F43|F43]], you will gain access to an LBAS, which is '''highly recommended''' to help simplify the battle on the boss node for this map.
*It's recommended to bring 2 Land Based Bombers and 2 Fighters if you have access to your [[LBAS]].
*It's recommended to bring 2 Land Based Bombers and 2 Fighters if you have access to your [[LBAS]].
**3 Land-Based Bombers and 1 Fighter is an alternative recommendation if you want to have a better shot at damaging the installations, but may result in your losing planes more and also will likely lose your Land-Based Attack Bombers' expertise in the process.
**3 Land-Based Bombers and 1 Fighter is a viable alternative if you want to damage more the installations, but it may result in more plane losses.
**Another alternative is to bring 4 Land Based Bombers and focus them on C node instead of the boss node. Plane loss here is minimal. This can significantly improve the pass rate of an [[Akitsushima]]/[[Nagato]] Kai Ni fleet which emphasizes anti-installation over anti-ship performance.
**Another alternative is to bring 4 Land Based Bombers and focus them on Node {{MapRoute|C|red}} instead of the boss. Plane losses here are minimal. This can significantly improve the pass rate of an [[Akitsushima]] fleet which emphasizes anti-installation over anti-ship performance.
*The Distance your Land-Based Planes can travel on this map is calculated from Start Point 1 and heading eastward each node.
*The Distance your Land-Based Planes can travel on this map is calculated from Start Point 1 and heading eastward each node.
*Bring planes with a distance of 5 or more in order for this to support an attack on the boss node.
*Bring planes with a distance of 5 or more in order to reach the boss.
*If your Land-Based planes focus on targeting the [[Artillery Imp]]s and [[Supply Depot Princess]], the battle will be significantly easier.
*If your Land-Based planes focus on targeting the [[Artillery Imp]]s and [[Supply Depot Princess]], the battle will be easier.
*This map can also serve as a good location to train your Land-Based attack planes to max expertise. Bring only Land-Based Attackers with a range of 8 or more as they will reach enough distance to allow you to use Maruyu solo on the submarine node on Node M which your planes should target in order to train them.
*This map can also train your Land-Based attack planes if you haven't unlocked [[7-4]] LBAS yet. Bring only Land-Based bombers with a range of 8 or more on Node {{MapRoute|M|red}}, and sortie a single SS.
===Recommended Fleet (Normal clear and most of the 6-4 quests)===
*'''1 CL flagship, 1 (F)BB, 3 DD, 1 CAV / 1 (F)BB, 4 DD, 1 CAV / [[Nagato]] Kai Ni, [[Mutsu]] Kai Ni, 4 DD / 1 CL flagship, [[Nagato]] Kai Ni, [[Mutsu]] Kai Ni, 3 DD''' routes '''B-D-C-F-N'''
===Recommended Fleets===
**Gives the shortest and easiest route to the boss, '''but requires Fast fleet''', this means if you are using slow BB, you have to speed them up with the help of Turbine + Boiler Synergy.
<tabber>
|-|West fleets =
'''Regular fleets (must be fast):'''
*'''1CL (flagship), 1(F)BB, 3DD, 1CAV'''
*1(F)BB, 4DD, 1CAV
*[[Nagato Kai Ni]], [[Mutsu Kai Ni]], 4DD
*'''1CL (flagship), [[Nagato Kai Ni]], [[Mutsu Kai Ni]], 3DD'''
*Route = {{MapRoute|B|red|D|pink|C|red|F|pink|N|red}}
**Gives the shortest and easiest route to the boss, but requires a '''Fast fleet''', this means that using slow BB implies the use of {{Turbine}}{{EquipmentLink|Improved Kanhon Type Turbine|Enhanced Kanhon Type Boiler|New Model High Temperature High Pressure Boiler|text=Speed modifiers}}.
**Fleet has the best chance of reaching the boss node while maintaining fuel and ammo to allow for a better outcome in the boss fight.
**Fleet has the best chance of reaching the boss node while maintaining fuel and ammo to allow for a better outcome in the boss fight.
** It's highly recommended to have a seaplane fighter or an Italian ship to help aid you in maintaining air superiority/air parity over the fights on your way to the boss. However, if you have her, Ise Kai Ni can pretty much guarantee air superiority, and even give a good chance for air supremacy at the boss when combined with the aforementioned (and still have two free slots after making fast, if given the RE slot).
**It's highly recommended to have an SPF to help maintain AS/AP over the fights on your way to the boss. However, [[Ise Kai Ni]] or [[Hyuuga Kai Ni]] can guarantee AS, and even give a good chance for air supremacy at the boss when combined with the aforementioned (and still have two free slots after making fast, if given the RE slot).
**DDs and CLs are recommended to have [[WG42]]s and [[Daihatsu]] as these are the only effective ways to do damage to the [[Battery Imp]]s and do decent chipping damage to the [[Isolated Island Princess]], CAs and BBs should be armed with a [[Type 3 Shell]] against the installation bosses. BBs may also bring AP shells to help aid in doing daytime battle damage.
**DDs and CLs are recommended to have [[WG42]]s and [[Daihatsu]] as these are the only effective ways to do damage to the [[Battery Imp]]s and do decent chipping damage to the [[Isolated Island Princess]], CAs and BBs should be armed with a [[Type 3 Shell]] against the installation bosses. BBs may also bring AP shells to help aid in doing daytime battle damage.
===Recommended Fleet for <font color="red">Quest By10 (Yearly June 6-4 east route)</font>===
'''Akitsushima fleets:'''
*'''1 CV (Flagship), 1 BB(V), 1 CL, 2 DD, 1 CAV''' routes '''M-K-J-I-N'''
*1BB(V), 1CAV, 1CL, 2DD, [[Akitsushima]]
**'''NOT RECOMMENDED''' for normal clear, only use this comp for this particular quest due to the nature of 6-4 east route preboss having a lot of dangerous enemies that can potentially wreck your ships.
*'''[[Nagato Kai Ni]], [[MutsuKai Ni]], 1CAV, 2DD, [[Akitsushima]]'''
***Node M is full of So-Class submarine, while node K and J each <font color="red">'''having CV Wo Kai Flagship, accompanied by either BB Ta-Class flagship or BB Ru-Class Kai Flagship'''</font>. With all these highly dangerous enemies awaiting preboss, a proper fleet with strong ships and equipment is required if you wish to bypass all these nodes safely.
*[[Nagato Kai Ni]], [[Mutsu Kai Ni]], 1CL, 2DD, [[Akitsushima]]
*Route = {{MapRoute|A|red|D|pink|C|red|F|pink|N|red}}
**[[Akitsushima]] allows for the shortest possible path on the west entrance.
**Here, Akitsushima should be armed with at least 2 SPF, as her role will serve to be a distraction and to maintain a degree of air superiority at the boss node depending on the formation.
|-|East fleets=
*'''1CV(L) (Flagship), 1BB(V), 1CAV, 1CL, 2DD'''
*Route = {{MapRoute|M|red|K|red|J|red|I|pink|N|red}}
**<font color="red">'''NOT RECOMMENDED'''</font> for normal clear, only use this comp for this particular quests like [[Quests#By10|By10]], due to the nature of 6-4 East route pre-boss having a lot of dangerous enemies that can potentially wreck your ships.
***Node {{MapRoute|M|red}} is full of So-Class SSs, while node {{MapRoute|K|red}} and {{MapRoute|J|red}} each <font color="red">'''have Wo Kai Flagship CV, accompanied by either Ta-Class flagship BB or Ru-Class Kai Flagship BB'''</font>. With all these highly dangerous enemies awaiting in pre-boss, a proper fleet with strong ships and equipment is required if you wish to pass all these nodes safely.
**LBAS can be used on preboss pass them more easily, but you may suffer on the boss fight if you lack good anti-installation equipment.
**LBAS can be used on preboss pass them more easily, but you may suffer on the boss fight if you lack good anti-installation equipment.
**Keep in mind that [[Artillery Imp]] at the boss node have fairly high AA that can easily wipe your bombers on your CVs. Do consider the bombers that have AA resistance so that your CV can at least do the shelling and take out some of the escort enemies.
**Keep in mind that [[Artillery Imp]] at the boss node have high AA that can easily wipe your bombers on your CVs. Do consider the bombers that have AA resistance so that your CV can at least do the shelling and take out some of the escort enemies.
**CAV can be replaced with LHA to '''skip node I''', which is an air raid node, but LHA may have some issue surviving the preboss.
**The CAV can be replaced with a LHA to skip node {{MapRoute|I|pink}}, which is an air raid node, but LHA may have some issue surviving the pre-boss.
***LHA can be anti-installation focused, with Nukes.
</tabber>
===Nodes And Enemy Encounters===
===Nodes And Enemy Encounters===