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Line 28: Line 28:
  
 
|B -> C/resource, D =  
 
|B -> C/resource, D =  
−
*Meet '''ANY''' of the following to '''FORCE''' D
+
*Meet '''ANY''' of the following to go to D
−
**Fleet contains no DD and DE
+
**DD+DE = 0
 
**CV(B/L) ≥ 3
 
**CV(B/L) ≥ 3
 
**(F)BB(V) ≥ 3
 
**(F)BB(V) ≥ 3
 
*Go to C if DD+DE ≥ 3
 
*Go to C if DD+DE ≥ 3
−
*Otherwise, random routing
+
*Otherwise, from top to bottom
−
**If fleet contains CL, 80 % to C
+
**If CL ≥ 1, 80% C 20% D
−
**Otherwise, 65 % to C
+
**If CL = 0, 60% C 40% D
  
 
|D -> E/resource, G/resource =
 
|D -> E/resource, G/resource =
Line 45: Line 45:
 
*Meet '''ANY''' of the following to go to E
 
*Meet '''ANY''' of the following to go to E
 
**DD+DE ≥ 4
 
**DD+DE ≥ 4
−
**Fleet contains AV and DD+DE ≥ 2
+
**AS+AO+AV ≥ 1 and DD+DE ≥ 2
 
**BBV ≥ 2 and DD+DE ≥ 2
 
**BBV ≥ 2 and DD+DE ≥ 2
−
*Random between E and H if DD+DE ≥ 2
+
*Otherwise, from top to bottom
−
*Otherwise, random routing between H and I.
+
**If DD+DE = 3, 80% E 20% H
 +
**If DD+DE = 2, 60% E 40% H
 +
**If DD+DE ≤ 1, 50% H 50% I
  
 
|J -> K/empty, L =  
 
|J -> K/empty, L =  
 
*Meet '''ANY''' of the following to go to L
 
*Meet '''ANY''' of the following to go to L
−
**DD ≥ 4 and SS(V) = 0
+
**DD ≥ 4
−
**Fleet contains both AV and CL, with DD+DE ≥ 2
+
**AV ≥ 1, CL ≥ 1 and DD+DE ≥ 2
−
*Otherwise, random routing
+
*Otherwise, from top to bottom
 +
**If DD ≥ 2: 75% L 25% K
 +
**If DD ≤ 1: 65% L 35% K
 
}}
 
}}
  

Revision as of 08:22, 22 October 2025

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

World 1 1-4 Map.png
Strategy Name 南1号作戦
1st Southern Operation
Difficulty ☆ ☆ ☆
Item Ammunition Steel Bauxite
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
  • Go to C if DD+DE ≥ 3
  • 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:

  • To bring air power, through fighters notably, 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 Seaplane BomberBomber/Seaplane Fighter seaplane bombers/fighters are also an option, notably AV.
  • 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.

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, 2 DD, 1 AV, 2 XX

4 DD, 2 XX (XX cannot be SS(V))

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:
  • Needs 3-5 DD+DE to also avoid BD branching
Air State
AD AP AS AS+
9 14 30 60
Fleet Notes
Standard comps to reach the boss, with no major challenge on the route.
AS Fleets
Fleet Info
Single 1 AS, 5 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:
  • Avoids J
  • Needs 3-5 DD+DE to also avoid BD branching
Air State
AD AP AS AS+
9 14 30 60
Fleet Notes
A more permissive comp, for exotic quests notably.

Resource Nodes

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

  • See here for more details.

Enemy Compositions

World 1 1-4 Map.png
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 Light Cruiser He-Class (1506): 18 Armor, 36 HPBattle Card Flagship Icon.png Light Cruiser He-Class (1506): 18 Armor, 36 HP Destroyer Ha-Class (1503): 7 Armor, 24 HP Destroyer Ha-Class (1503): 7 Armor, 24 HP 0/0
0/0
Line Ahead
Double Line 		90 Heavy Cruiser Ri-Class (1509): 28 Armor, 58 HPBattle Card Flagship Icon.png Light Cruiser He-Class (1506): 18 Armor, 36 HP Destroyer Ro-Class (1502): 6 Armor, 22 HP Destroyer Ro-Class (1502): 6 Armor, 22 HP 0/0
0/0
Line Ahead
Double Line 		90 Heavy Cruiser Ri-Class (1509): 28 Armor, 58 HPBattle Card Flagship Icon.png Light Cruiser He-Class (1506): 18 Armor, 36 HP Destroyer I-Class (1501): 5 Armor, 20 HP Destroyer I-Class (1501): 5 Armor, 20 HP Destroyer I-Class (1501): 5 Armor, 20 HP 0/0
0/0
# Enemy
Form. 		Base EXP Normal Battle Node AD/AP
AS/AS+
1-4 C
# Resource Node
C Gained 10~20 Steel
# 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 Light Cruiser He-Class (1506): 18 Armor, 36 HPBattle Card Flagship Icon.png Light Cruiser He-Class (1506): 18 Armor, 36 HP Destroyer Ha-Class (1503): 7 Armor, 24 HP Destroyer Ha-Class (1503): 7 Armor, 24 HP 0/0
0/0
Line Ahead
Double Line 		90 Heavy Cruiser Ri-Class (1509): 28 Armor, 58 HPBattle Card Flagship Icon.png Light Cruiser He-Class (1506): 18 Armor, 36 HP Destroyer Ro-Class (1502): 6 Armor, 22 HP Destroyer Ro-Class (1502): 6 Armor, 22 HP 0/0
0/0
Line Ahead
Double Line 		90 Heavy Cruiser Ri-Class (1509): 28 Armor, 58 HPBattle Card Flagship Icon.png Light Cruiser He-Class (1506): 18 Armor, 36 HP Destroyer I-Class (1501): 5 Armor, 20 HP Destroyer I-Class (1501): 5 Armor, 20 HP Destroyer I-Class (1501): 5 Armor, 20 HP 0/0
0/0
# Enemy
Form. 		Base EXP Normal Battle Node AD/AP
AS/AS+
1-4 E
# Resource Node
E Gained 10~20 Ammo
# 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 Bauxite
# 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 Light Carrier Nu-Class (1510): 25 Armor, 65 HP, 8 APBattle Card Flagship Icon.png Light Carrier Nu-Class (1510): 25 Armor, 65 HP, 8 AP Light Cruiser He-Class (1506): 18 Armor, 36 HP Destroyer Ro-Class (1502): 6 Armor, 22 HP Destroyer Ro-Class (1502): 6 Armor, 22 HP 6/11
24/48
Diamond 120 Light Carrier Nu-Class (1510): 25 Armor, 65 HP, 8 APBattle Card Flagship Icon.png Light Carrier Nu-Class (1510): 25 Armor, 65 HP, 8 AP Heavy Cruiser Ri-Class (1509): 28 Armor, 58 HP Light Cruiser He-Class (1506): 18 Armor, 36 HP Destroyer Ro-Class (1502): 6 Armor, 22 HP Destroyer Ro-Class (1502): 6 Armor, 22 HP
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 Light Carrier Nu-Class (1510): 25 Armor, 65 HP, 8 APBattle Card Flagship Icon.png Heavy Cruiser Ri-Class (1509): 28 Armor, 58 HP Light Cruiser Ho-Class (1505): 15 Armor, 33 HP Destroyer I-Class (1501): 5 Armor, 20 HP Destroyer I-Class (1501): 5 Armor, 20 HP 3/6
12/24
Diamond 100 Light Carrier Nu-Class (1510): 25 Armor, 65 HP, 8 APBattle Card Flagship Icon.png Light Carrier Nu-Class (1510): 25 Armor, 65 HP, 8 AP Light Cruiser Ho-Class (1505): 15 Armor, 33 HP Destroyer I-Class (1501): 5 Armor, 20 HP Destroyer I-Class (1501): 5 Armor, 20 HP 6/11
24/48
Diamond 110 Light Carrier Nu-Class (1510): 25 Armor, 65 HP, 8 APBattle Card Flagship Icon.png Light Carrier Nu-Class (1510): 25 Armor, 65 HP, 8 AP Heavy Cruiser Ri-Class (1509): 28 Armor, 58 HP Light Cruiser Ho-Class (1505): 15 Armor, 33 HP Destroyer I-Class (1501): 5 Armor, 20 HP Destroyer I-Class (1501): 5 Armor, 20 HP
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 Battleship Ru-Class (1511): 70 Armor, 90 HPBattle Card Flagship Icon.png Torpedo Cruiser Chi-Class (1508): 22 Armor, 48 HP Torpedo Cruiser Chi-Class (1508): 22 Armor, 48 HP Light Cruiser He-Class (1506): 18 Armor, 36 HP Destroyer Ro-Class (1502): 6 Armor, 22 HP Destroyer Ro-Class (1502): 6 Armor, 22 HP
0/0
0/0
Line Ahead
Double Line 		120 Battleship Ru-Class (1511): 70 Armor, 90 HPBattle Card Flagship Icon.png Light Carrier Nu-Class (1510): 25 Armor, 65 HP, 8 AP Light Cruiser He-Class (1506): 18 Armor, 36 HP Light Cruiser He-Class (1506): 18 Armor, 36 HP Destroyer Ro-Class (1502): 6 Armor, 22 HP Destroyer Ro-Class (1502): 6 Armor, 22 HP
3/6
12/24
Line Ahead
Double Line 		130 Battleship Ru-Class (1511): 70 Armor, 90 HPBattle Card Flagship Icon.png Light Carrier Nu-Class (1510): 25 Armor, 65 HP, 8 AP Light Carrier Nu-Class (1510): 25 Armor, 65 HP, 8 AP Light Cruiser He-Class (1506): 18 Armor, 36 HP Destroyer Ro-Class (1502): 6 Armor, 22 HP Destroyer Ro-Class (1502): 6 Armor, 22 HP
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 Standard Carrier Wo-Class (1512): 40 Armor, 85 HP, 10 APBattle Card Flagship Icon.png Heavy Cruiser Ri-Class (1509): 28 Armor, 58 HP Light Cruiser He-Class (1506): 18 Armor, 36 HP Destroyer Ro-Class (1502): 6 Armor, 22 HP Destroyer Ro-Class (1502): 6 Armor, 22 HP Destroyer Ro-Class (1502): 6 Armor, 22 HP
4/7
15/30
Diamond 125 Standard Carrier Wo-Class (1512): 40 Armor, 85 HP, 10 APBattle Card Flagship Icon.png Heavy Cruiser Ri-Class (1509): 28 Armor, 58 HP Light Cruiser He-Class (1506): 18 Armor, 36 HP Destroyer Ha-Class (1503): 7 Armor, 24 HP Destroyer Ha-Class (1503): 7 Armor, 24 HP Destroyer Ha-Class (1503): 7 Armor, 24 HP
4/7
15/30
Diamond 130 Standard Carrier Wo-Class (1512): 40 Armor, 85 HP, 10 APBattle Card Flagship Icon.png Light Carrier Nu-Class (1510): 25 Armor, 65 HP, 8 AP Heavy Cruiser Ri-Class (1509): 28 Armor, 58 HP Light Cruiser He-Class (1506): 18 Armor, 36 HP Destroyer Ro-Class (1502): 6 Armor, 22 HP Destroyer Ro-Class (1502): 6 Armor, 22 HP
7/13
27/54
Diamond 135 Standard Carrier Wo-Class (1512): 40 Armor, 85 HP, 10 APBattle Card Flagship Icon.png Light Carrier Nu-Class (1510): 25 Armor, 65 HP, 8 AP Heavy Cruiser Ri-Class (1509): 28 Armor, 58 HP Light Cruiser He-Class (1506): 18 Armor, 36 HP Destroyer Ha-Class (1503): 7 Armor, 24 HP Destroyer Ha-Class (1503): 7 Armor, 24 HP
7/13
27/54
Diamond 140 Standard Carrier Wo-Class (1512): 40 Armor, 85 HP, 10 APBattle Card Flagship Icon.png Standard Carrier Wo-Class (1512): 40 Armor, 85 HP, 10 AP Heavy Cruiser Ri-Class (1509): 28 Armor, 58 HP Light Cruiser He-Class (1506): 18 Armor, 36 HP Destroyer Ha-Class (1503): 7 Armor, 24 HP Destroyer Ha-Class (1503): 7 Armor, 24 HP
7/14
30/60
Diamond 150 Standard Carrier Wo-Class (1512): 40 Armor, 85 HP, 10 APBattle Card Flagship Icon.png Standard Carrier Wo-Class (1512): 40 Armor, 85 HP, 10 AP Heavy Cruiser Ri-Class (1509): 28 Armor, 58 HP Light Cruiser He-Class (1506): 18 Armor, 36 HP Destroyer Ni-Class (1504): 9 Armor, 28 HP Destroyer Ni-Class (1504): 9 Armor, 28 HP
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.
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 ✔️ ✔️ ✔️ ✔️


v · e
World Navigation
Naval Base Sea Area
South-west Islands Sea Area
Northern Sea Area
Southwestern Sea Area
Western Sea Area
Southern Sea Area
Central Sea Area
Limited Time Area
Events: Limited Time Areas
1st Stage Operations Reffer to the ongoing event (if any)
2nd Stage Operations Reffer to the ongoing event (if any)
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