World 1/1-4

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1-5

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World 6

World 1-4: 南西諸島防衛線 - Nansei Islands Defense Line

Strategy Name	南1号作戦 1st Southern Operation
Difficulty	☆ ☆ ☆
Item
Strategy Content	南西諸島の防衛ライン上の敵侵攻艦隊を捕捉、全力出撃でこれを撃滅せよ！ An enemy invasion fleet is pressing on the defensive line in the Nansei Islands. Sail out in full force and destroy them!

Boss Air Control
AD	AP	AS	AS+
9	14	30	60
Boss Route Air Control
AD	AP	AS	AS+
8	11	24	48

1-4 Unlocking & Progression
Unlock conditions	1-4 is unlocked after clearing 1-3
Clear conditions	To clear the map: the boss's flagship must be sunk once

Stage Guide

1-4 Branching Rules
Nodes		Rules
Start	A	Random routing
	B
B	C	Meet ANY of the following to go to D DD+DE = 0 CV(B/L) ≥ 3 (F)BB(V) ≥ 3 Meet ANY of the following to go to C DD+DE ≥ 3 AO ≥ 1 and DD+DE ≥ 2 Otherwise, from top to bottom If CL ≥ 1, 80% C 20% D If CL = 0, 60% C 40% D
	D
D	E	Go to E if fleet contains AS Go to G if fleet contains AV Otherwise, random routing
	G
F	E	Meet ANY of the following to go to E DD+DE ≥ 4 AS+AO+AV ≥ 1 and DD+DE ≥ 2 BBV ≥ 2 and DD+DE ≥ 2 Otherwise, from top to bottom If DD+DE = 3, 80% E 20% H If DD+DE = 2, 60% E 40% H If DD+DE ≤ 1, 50% H 50% I
	H
	I
J	K	Meet ANY of the following to go to L DD ≥ 4 AV ≥ 1, CL ≥ 1 and DD+DE ≥ 2 Otherwise, from top to bottom If DD ≥ 2: 75% L 25% K If DD ≤ 1: 65% L 35% K
	L

Tips

This is the first map in which the enemy fleets possess carriers, with at least one carrier on the route and one on the boss.

• The fleet will notably be attacked by enemy bombers in the opening airstrike.

To deal with enemy carriers, it is possible to:

• Ignore the enemy carriers, which is possible with durable ships (at least CL, preferably CA or higher), and anti-air set-ups such as AACI.
• Bring air power, notably by using fighters, in order to ensure air superiority (AS), and mitigate the enemy air power.
  • Bring a CV(B/L) is the simpler way, but ships capable of carrying Bomber/ seaplane bombers/fighters are also an option, notably CAV.
  • Using an AV also works, but also requires bringing an AS ship (having an AV with no AS always forces to route to node J whe reaching D, which contains an enemy battleship).

This map is also convenient for completing Bw2, as it can bring 2 to 4 CV(L) kills per run.

• Preferably done with a fleet of three SS, the echelon formations here hurting them far less than those in 2-2.

Recommended Fleets

Standard Fleets
Fleet Info Single 1 CL, 3 DD, 1 AV, 1 XX 4 DD, 2 XX LoS Any Speed Any RouteNode Types: RED: Battle PURPLE: Night Battle PINK: Air Raid/Battle ORANGE: Enemy Ambush/ASS BLUE: Empty/Choice Light Blue: Emergency Anchorage Repair GREEN: Resource/TP VIOLET: Maelstrom Random but guarantees boss reach	Air State AD AP AS AS+ 9 14 30 60
Fleet Notes
Suitable when lacking an AS. Keep in mind that using an AV and no AS in the fleet will always go to J if D is reached, which contains an enemy battleship.

AS Fleet
Fleet Info Single 1 AS, 3 DD, 2 XX LoS Any Speed Any RouteNode Types: RED: Battle PURPLE: Night Battle PINK: Air Raid/Battle ORANGE: Enemy Ambush/ASS BLUE: Empty/Choice Light Blue: Emergency Anchorage Repair GREEN: Resource/TP VIOLET: Maelstrom Random but guarantees boss reach Will always avoids J, which contains an enemy battleship.	Air State AD AP AS AS+ 9 14 30 60
Fleet Notes
Easier route for reaching the boss consistently. Suitable for farming the boss node. One DD can be replaced with an AO that can launch additional bombers, such as Yamashio Maru Kai to get more airstrike damage, while still keeping the shortest routing.

Resource Nodes

C E G are "Normal Resource Nodes" rewarding respectively steel , ammo , and bauxite .

• See here for more details.

Enemy Compositions

1-4 A

#	Empty Node
A	気のせいだった。/敵影を見ず。/穏やかな海です。/穏やかな海峡です。/警戒が必要です。/静かな海です。 Must be my imagination./No enemy spotted./Calm seas./Calm straits./Be alert./Peaceful seas.
#	Empty Node

1-4 B: 敵偵察艦隊 (PoiDB)

#	Enemy Form.	Base EXP	Normal Battle Node	AD/AP AS/AS+
B	Line Ahead Double Line	90		0/0 0/0
	Line Ahead Double Line	90		0/0 0/0
	Line Ahead Double Line	90		0/0 0/0
#	Enemy Form.	Base EXP	Normal Battle Node	AD/AP AS/AS+

1-4 C

#	Resource Node
C	Gained 10~20
#	Resource Node

1-4 D: 敵偵察艦隊 (PoiDB)

#	Enemy Form.	Base EXP	Normal Battle Node	AD/AP AS/AS+
D	Line Ahead Double Line	90		0/0 0/0
	Line Ahead Double Line	90		0/0 0/0
	Line Ahead Double Line	90		0/0 0/0
#	Enemy Form.	Base EXP	Normal Battle Node	AD/AP AS/AS+

1-4 E

#	Resource Node
E	Gained 10~20
#	Resource Node

1-4 F

#	Empty Node
F	気のせいだった。/敵影を見ず。/穏やかな海です。/穏やかな海峡です。/警戒が必要です。/静かな海です。 Must be my imagination./No enemy spotted./Calm seas./Calm straits./Be alert./Peaceful seas.
#	Empty Node

1-4 G

#	Resource Node
G	Gained 10~20
#	Resource Node

1-4 H: 敵前衛任務部隊I軍 (PoiDB)

#	Enemy Form.	Base EXP	Normal Battle Node	AD/AP AS/AS+
H	Diamond	100		6/11 24/48
	Diamond	120		6/11 24/48
#	Enemy Form.	Base EXP	Normal Battle Node	AD/AP AS/AS+

1-4 I: 敵前衛任務部隊II群 (PoiDB)

#	Enemy Form.	Base EXP	Normal Battle Node	AD/AP AS/AS+
I	Diamond	90		3/6 12/24
	Diamond	100		6/11 24/48
	Diamond	110		6/11 24/48
#	Enemy Form.	Base EXP	Normal Battle Node	AD/AP AS/AS+

1-4 J: 敵支援打撃任務群 (PoiDB)

#	Enemy Form.	Base EXP	Normal Battle Node	AD/AP AS/AS+
J	Line Ahead Double Line	110		0/0 0/0
	Line Ahead Double Line	120		3/6 12/24
	Line Ahead Double Line	130		6/11 24/48
#	Enemy Form.	Base EXP	Normal Battle Node	AD/AP AS/AS+

1-4 K

#	Empty Node
K	気のせいだった。/敵影を見ず。/穏やかな海です。/穏やかな海峡です。/警戒が必要です。/静かな海です。 Must be my imagination./No enemy spotted./Calm seas./Calm straits./Be alert./Peaceful seas.
#	Empty Node

1-4 L: 敵機動部隊 (PoiDB)

#	Enemy Form.	Base EXP	Boss Battle Node	AD/AP AS/AS+
L	Diamond	120		4/7 15/30
	Diamond	125		4/7 15/30
	Diamond	130		7/13 27/54
	Diamond	135		7/13 27/54
	Diamond	140		7/14 30/60
	Diamond	150		7/14 30/60
#	Enemy Form.	Base EXP	Boss Battle Node	AD/AP AS/AS+

Ship Drops

This map currently has "limited-time" drops that don't appear in the table below, see Drop List for more info.

☑ All drops (enabled)☒ All drops (disabled, only rare drops)

Ship drops
Type	Ship?	B	D	H	I	J	L
DD	Asashimo						✔️
DD	Makigumo						✔️
CL	Nagara	✔️	✔️	✔️	✔️	✔️
CL	Sendai						✔️
CA	Kinugasa						✔️
CA	Myoukou			✔️		✔️	✔️
CVL	Ryuujou						✔️
CVL	Shouhou						✔️
DD	Mutsuki	✔️	✔️	✔️	✔️	✔️	✔️
DD	Kisaragi	✔️	✔️	✔️	✔️	✔️	✔️
DD	Satsuki	✔️	✔️	✔️	✔️	✔️	✔️
DD	Fumizuki	✔️	✔️	✔️	✔️	✔️	✔️
DD	Nagatsuki	✔️	✔️	✔️	✔️	✔️	✔️
DD	Kikuzuki	✔️	✔️	✔️	✔️	✔️	✔️
DD	Mikazuki	✔️	✔️	✔️	✔️	✔️	✔️
DD	Mochizuki	✔️	✔️	✔️	✔️	✔️	✔️
DD	Fubuki	✔️	✔️	✔️		✔️	✔️
DD	Shirayuki	✔️	✔️	✔️	✔️	✔️	✔️
DD	Hatsuyuki	✔️	✔️	✔️	✔️	✔️	✔️
DD	Miyuki	✔️	✔️	✔️	✔️	✔️	✔️
DD	Murakumo	✔️	✔️	✔️	✔️	✔️	✔️
DD	Isonami	✔️	✔️	✔️	✔️	✔️	✔️
DD	Ayanami	✔️	✔️	✔️	✔️	✔️	✔️
DD	Shikinami	✔️	✔️	✔️	✔️	✔️	✔️
DD	Akatsuki	✔️	✔️	✔️	✔️	✔️	✔️
DD	Hibiki	✔️	✔️	✔️	✔️	✔️	✔️
DD	Ikazuchi	✔️	✔️	✔️	✔️	✔️	✔️
DD	Inazuma	✔️	✔️	✔️	✔️	✔️	✔️
DD	Hatsuharu	✔️	✔️	✔️	✔️	✔️	✔️
DD	Nenohi	✔️	✔️	✔️	✔️	✔️	✔️
DD	Wakaba	✔️	✔️	✔️	✔️	✔️	✔️
DD	Hatsushimo	✔️	✔️	✔️	✔️	✔️	✔️
DD	Shiratsuyu	✔️	✔️	✔️	✔️	✔️	✔️
DD	Shigure	✔️	✔️	✔️	✔️	✔️	✔️
DD	Murasame	✔️	✔️	✔️	✔️	✔️	✔️
DD	Yuudachi	✔️	✔️	✔️	✔️	✔️	✔️
DD	Samidare	✔️	✔️	✔️	✔️	✔️	✔️
DD	Suzukaze	✔️	✔️	✔️	✔️	✔️	✔️
DD	Ooshio	✔️	✔️	✔️	✔️	✔️	✔️
DD	Michishio	✔️	✔️	✔️	✔️	✔️	✔️
DD	Arashio	✔️	✔️	✔️	✔️	✔️	✔️
DD	Arare	✔️	✔️	✔️	✔️	✔️	✔️
DD	Kasumi	✔️	✔️	✔️	✔️	✔️	✔️
DD	Kagerou	✔️	✔️	✔️		✔️	✔️
DD	Shiranui	✔️	✔️	✔️	✔️	✔️	✔️
DD	Kuroshio	✔️	✔️	✔️	✔️	✔️	✔️
CL	Tenryuu	✔️	✔️	✔️	✔️	✔️	✔️
CL	Tatsuta	✔️	✔️	✔️		✔️	✔️
CL	Kuma	✔️	✔️	✔️	✔️	✔️	✔️
CL	Tama	✔️	✔️	✔️	✔️	✔️	✔️
CL	Kiso	✔️	✔️	✔️	✔️	✔️	✔️
CL	Isuzu	✔️	✔️	✔️	✔️	✔️	✔️
CL	Natori	✔️	✔️	✔️	✔️	✔️	✔️
CL	Yura	✔️	✔️	✔️	✔️	✔️	✔️
CL	Jintsuu	✔️	✔️	✔️	✔️	✔️	✔️
CL	Naka	✔️	✔️	✔️	✔️	✔️	✔️
CA	Furutaka	✔️	✔️	✔️	✔️	✔️	✔️
CA	Kako	✔️	✔️	✔️	✔️	✔️	✔️
CA	Aoba	✔️	✔️	✔️	✔️	✔️	✔️
CA	Nachi			✔️		✔️	✔️
CA	Ashigara			✔️	✔️	✔️	✔️
CA	Haguro			✔️	✔️	✔️	✔️
CA	Maya						✔️
CA	Choukai						✔️
CVL	Houshou	✔️	✔️	✔️	✔️	✔️
AV	Chitose			✔️	✔️	✔️	✔️
AV	Chiyoda			✔️	✔️	✔️	✔️