Early Spring 2024 Event/E-4/Sandbox

Sandbox Rules

This sandbox is to be used to construct an event guide for the above-mentioned event map. These guides are to all of the following requirements:

• An overview of the map, including ship/equipment bonuses, Ship Locks, and special mechanics,
• List of branching unlocking requirements (if there are multiple requirements, compositions for each path along with the below requirements will be needed to discuss the unlocking requirements in question),
• A list of working compositions that work: (T=these must have possible alternatives for players who may or may not have all ships needed for a specific path),
  • The Paths said compositions will take (to explain each path the composition will/can take),
  • A summary or description of what kind of obstacles a composition will face.
• A description of the boss node: what it consists of, and a descriptive guide on what the player should consider for a course of action to successfully win the battle,
• Optional: Tips/guides to farm certain ships and/or resources (this can also require compositions, paths, and possible descriptions).

Editors are to construct their own version of the guide/part of the guide, and complete it in a timely fashion.

No editor is allowed to edit over other editors' work without the consent of the editor and his approval to do so.

Several versions will be constructed through this page and will be reviewed and approved by the staff/collaboration committee before being moved for the Early Spring 2024 Event, being reviewed and updated once more before it can be released.

Overall there should be 3 versions of the guide that have to be constructed, including: Preliminary > Polished > Finalized Guides

With each approval of each version of the guide, the said guide will be updated to the main page, and construction of the next version will begin.

All guides outside of the approved version will be removed and work will begin from the approved version to make it better for the next version until the finalized version is made.

Branching Table

E-4 Branching Rules (Start Points) ▼/▲
Nodes		Rules
Start	1	Single Fleet CTF STF until point 3 is unlocked and does not meet the requirements to start at point 2 TCF until point 2 is unlocked
	2	STF: Fleet contains 1-2BBV/CAV 1-2CL/CT 8-9DD/DE/AO/AS/LHA TCF
	3	STF: Does not meet the requirements to start at point 2

E-4 Branching Rules (Start Point 1) ▼/▲
Nodes		Rules
1	A	Does not meet the requirements to go to A1
	A1	Meet ALL of the following requirements: Single: Fast Fleet Single: If Slow Fleet, amount of AS + SS(V) ≥ 1 (Easy/Medium/Hard) If Slow Fleet, then amount of Yamato-class ships ≤ 1 Amount of CV(B) ≤ 4 Node P is unlocked: Does not meet the requirements to go to P
	P	Single Fleet Meet ANY of the following requirements: Amount of DD + DE ≥ 3 (Casual) Amount of SS(V) ≥ 1 (Casual) Amount of SS(V) ≥ 2 (Easy) Amount of SS(V) ≥ 3 (Medium) Amount of SS(V) ≥ 4 Amount of AS ≥ 1 and amount of SS(V) ≥ 3
A	A1	Does not meet the requirements to go to B
	B	Meet ALL of the following requirements: CTF/STF Amount of CV(B) ≤ 3 If amount of Yamato-class ships = 1, then amount of DD ≥ ? If amount of Yamato-class ships = 2, then amount of DD ≥ ?
A1	A2	Single Fleet
	B	CTF/STF
B	C	Active Branching
	D
C	C1	Meet ALL of the following requirements: Amount of AV ≤ 1 If Slow Fleet, then amount of CV(B/L) ≤ 3 If Slow Fleet, then amount of CA(V) ≤ 2
	C2	Does not meet the requirements to go to C1
D	D1	Meet ALL of the following requirements: Amount of (F)BB(V) = 0 Amount of CVL ≥ 1 OR amount of CL ≥ 2 * Amount of DD ≥ 4 *
	D2	Does not meet the requirements to go to D1
E	F	Does not meet the requirements to go to F
	F1	Meet ALL of the following requirements: Amount of (F)BB(V) + CV(B/L) ≤ 5 If Slow Fleet, then amount of (F)BB(V) + CV(B/L) ≤ 4 Amount of DD ≥ 3 If amount of Yamato-class ships = 1, then amount of DD ≥ 4 If amount of Yamato-class ships = 2, then amount of DD ≥ 5
F	F1	Routed thru C1 *
	J1	Routed thru P *
F1	F2	Fail the LoS check *
	G	Pass the LoS check *
J	F	Does not meet the requirements to go to J1
	J1	Meet ALL of the following requirements: Single Fleet Amount of (F)BB(V) + CV(B/L) = 0 Amount of SS(V) ≥ 4
J1	J2	Amount of (F)BB(V) + CV(B) ≥ 1 Further routing unknown
	Q	Amount of (F)BB(V) + CV(B) = 0 Does not meet the requirements to go to R
	R	Meet ALL of the following requirements: Amount of (F)BB(V) + CV(B) = 0 Amount of CVL + CAV? = 0 Amount of AV ≤ 1 If amount of CL = 1, then amount of DD ≥ 2 *

E-4 Branching Rules (Start Point 2) ▼/▲
Nodes		Rules
H	I	Slow Fleet
	J	Fast Fleet
I1	I2	???
	I3	???
J	J1	Fixed Route
J2	K	???
	L	Does not meet the requirements to go to M
	M	Fast Fleet * Amount of AV + CAV ≤ 2
L	M	Fixed Route *
M	N	Fail the LoS check
	O	Pass the LoS check cn3 78

E-4 Branching Rules (Start Point 3) ▼/▲
Nodes		Rules
3	F	Does not meet the requirements to go to T
	T	If amount of Yamato-class ships = 1, then amount of DD ≥ ? If amount of Yamato-class ships = 2, then amount of DD ≥ ?
F	U	Fixed Route *
J2	K	???
	L	Does not meet the requirements to go to V
	V	STF Amount of DD + DE ≥ 5
L	M	Fixed Route *
U	J2	Does not meet the requirements to go to V
	V	Meet ALL of the following requirements: Amount of CL ≥ 2 If Slow Fleet, amount of CV(B) = 0 If Slow Fleet, amount of CVL ≤ 1
V	W	???
	X	???
X	Y	Fail the LoS check
	Z	Pass the LoS check cn3 119

* = Rule under review

? = Ship type/amount under review

Historical Bonuses

DISCLAIMER: This information is based on user-submitted data and is subject to revisions as more data is gathered. Any version of the ship receives the bonus regardless of remodel.

Ship Bonuses

??

Equipment Bonuses

??

Debuff

??

XX's Guide

Map Overview

E4 is a Combined fleet four-phase map consisting of one transport phase and three boss phases.

• ? LBAS are available to sortie on this map.

• This map uses 4 locks:
  • 3rd Fleet,
  • Wake Island Transport Unit,
  • The New Tatsumaki Fleet ,
  • Op. Z Decisive Battle Fleet.

• An "Airstrike Supported Battle" node is present on K,
• Node S is an "atoll node", where the new Ka-Tsu tanks
  ' opening can be deployed.

Phase 0.3: Gimmick

The following steps have to be performed to unlock the next phase.

	A3	C	D
Hard	Sx2	Sx2	Sx2
Medium	?	?	?
Easy	?	?	?
Casual	?	?	?

• Single/SF: 0-2 (F)BB(V)/CVL, 0-1 CA(V)/CLT, 1 CL, 3-4 DD
• Route: 1 A B D
• LBAS range: 4

Refer to #Phase 1: Boss 1's fleet for composition and routing.

• STF/CTF
• Route: 1 A B C
• LBAS range: 1

Refer to #Phase 1: Boss 1's fleet for composition and routing.

• STF/CTF
• Route: 1 A B D
• LBAS range: 2

Phase 0.7: Gimmick

The following steps have to be performed to unlock the next phase.

	C1	C2	D1	D2
Hard	AS	S	S	S
Medium	?	?	?	?
Easy	?	?	?	?
Casual	?	?	?	?

Refer to #Phase 1: Boss 1's fleet for composition and routing.

• STF/CTF
• Route: 1 A B C C1
• LBAS range: 3

	AS
Hard
Medium
Easy
Casual

• CTF: ??
• Route: 1 A B C C2
• LBAS range: 2

• CTF: ??
• Route: 1 A B D D1
• LBAS range: 2

• STF/CTF: ??
• Route: 1 A B D D2
• LBAS range: 3

Phase 1: Boss 1

• CTF: 2 BB(V), 2 CV(B), 1 VA(V)/AV, 1 CL/DD + 0-1 CA(V), 1 CL, 4-5 DD, Slow
• Route: 1 A B C C1 E F1 G

• CTF/STF: 2 FBB, 2 CV(B/L), 1 CAV, 1 CL + 0-1 CA(V)/CLT, 1 CL, 4-5 DD, Fast
• Route: 1 A1 B C C1 E F1 G

• CTF: 3 CV(B), 1CVL, 1 CAV, 1 CL + 0-1 CA(V)/CLT, 1 CL, 4-5 DD
• Route: 1 A1 B C C1 E F1 G

• LoS check: ??
• LBAS range: 5
• AP/AS= 101/225 on Hard

Phase 2: TP

Phase 1 is a "Transport Operation".

• TCF: 1-2 AV, 0-1 CVE/CL, 4-5 DD + 1-2 CL, 4-5 DD
• Route: 2 H J J1 J2 M O
• LoS check: ?
• LBAS range: 9

• As many Landing Craft, Drum Canisters, and Amphibious Tanks should be utilised in the fleet.

Phase 3: Boss 3

• Striking Force: 1 AS, 4-5 SS(V), 0-1 AV, 1-2 DD
• Route: 1 P J J1 R S
• LBAS range: 9

• This fleet can utilize the "Submarine Touch", a Special Attack involving a Submarine Tender leading a fleet of at least two submarines.

• The flagship must be a Submarine Tender (AS) at Lv 30+,
  • She must not be more than moderately damaged (中破).
• The 2nd and 3rd ships must be Submarines (SS) or Aircraft Carrying Submarines (SSV) and not evacuated via SFFCF,
  • The 4th ship may optionally be a SS(V), but does not affect the above requirement,
  • At least two SS(V) among the 2nd, 3rd, and 4th ships must not be more than lightly damaged (小破),
  • If all 3 ships are SS(V), the 2nd and 4th ones will attack; if one of the two is moderately damaged (中破), the 3rd one will attack instead.
• The fleet must be a single fleet or a Striking Force Fleet,
• The formation needs to be either Echelon or Line Abreast,
• At least one Submarine Supply Material must be available in the inventory.

• Two SS(V) will launch torpedo strikes.
• The attack power of each strike is postcapped and unaffected by formation, engagement, or damage cap.
• A rough damage formula per Submarine attack is:

[math]\displaystyle{ \text{DMG}_\text{day} = \text{TP} \times ( 1.2 + 0.04 \times \sqrt{LV} ) }[/math] [math]\displaystyle{ \text{DMG}_\text{night} = ( \text{FP + TP} ) \times ( 1.2 + 0.04 \times \sqrt{LV} ) }[/math]

With

• [math]\displaystyle{ \text{DMG} }[/math] the damage result for day and night battle respectively,
• [math]\displaystyle{ \text{FP} }[/math] the submarine's Firepower stat,
• [math]\displaystyle{ \text{TP} }[/math] the submarine's Torpedo stat,
• [math]\displaystyle{ \text{LV} }[/math] the submarine's Level.
  • [math]\displaystyle{ 1.2 + 0.04 \times \sqrt{LV} = 1.6 }[/math] at Lv 100.

The number of attacks per Touch ranges from 2 to 4.

• Each submarine will trough either 1 or 2 torpedo strikes.
  • Only Lv 75+ submarines can trigger 2 strikes,
  • If a Lv 75+ submarine does not carry any Submarine Radar, it rolls between 1 and 2 strikes randomly (exact rate unclear yet),
  • If a Lv 75+ submarine does carry any Submarine Radar, it is guaranteed to roll 2 strikes.

One Submarine Supply Material will be consumed for EACH battle the Touch triggers in.

• If the Touch triggers twice in a battle, only a single will be consumed for this battle.
• If the Touch triggers in multiple nodes, one will be consumed for each node it is triggered.

It does not consume any extra ammo. If the game is refreshed before the battle ends, then no material will be consumed even if the touch triggered.

Trigger rate is affected by the Level and luck stat of the participating ships.

• Submarine Radars affect the trigger rate, each increasing the trigger rate by about 10 %.

It has a chance to trigger every time the AS takes a turn at shelling.

• It can trigger in both day and night for the same battle.
• It can only trigger once during day battle.
• If it fails to trigger during the day battle, there is still a chance to trigger it in the follow-up night battle.
• If all enemies sunk, then touch stops early.

The attack order is always (where amo,g the attacking submarines, 1 is upper one and 2 is lower one):

• 1-1-2-2 for 4 attacks,
• 1-1-2 or 1-2-2 for 3 attacks,
• 1-2 for 2 attacks.
  • If touch stops early, then attacks can be just 1-1
  • Also note that the actual order may be different from client animation of who shoots torpedoes, which always assigns attackers alternately like 1-2-1-2 or 1-2-1 or 1-2, so you may mismatch the real attack.

The touch can be activated multiple times per sortie.

When attacking a fleet, the usual Targeting rules apply.

• The torpedoes fired target ships independently,
• When facing a Combined Fleet, if any ship is present in the escort fleet on day battle, then all torpedoes will be fired to the escort fleet.

Regular
Taigei Special Attack Taigei Special Attack Damaged Jingei Special Attack Jingei Special Attack Damaged Jingei Special Attack Kai Jingei Special Attack Kai Damaged Chougei Special Attack Chougei Special Attack Damaged Chougei Special Attack Kai Chougei Special Attack Kai Damaged Heian Maru Special Attack Heian Maru Special Attack Damaged Heian Maru Special Attack Kai Heian Maru Special Attack Kai Damaged
Seasonal
Taigei Summer 2021 Special Attack Taigei Summer 2021 Special Attack Damaged Jingei Summer 2021 Special Attack Damaged Jingei Summer 2021 Special Attack Chougei Summer 2022 Special Attack Chougei Summer 2022 Special Attack Damaged Heian Maru Summer 2024 Heian Maru Summer 2024 Damaged Heian Maru Kai Summer 2024 Heian Maru Kai Summer 2024 Damaged Special Attack Summer bis 2024 Special Attack Summer bis 2024 Damaged Special Attack Kai Summer bis 2024 Special Attack Kai Summer bis 2024 Damaged

• PT boats are present in the boss comp:

Ka-Tsu Animation
Ka-Tsu:
Ka-Tsu Kai:

Uniquely on "Atoll Nodes", it is possible to deploy the Ka-Tsu tanks
to trigger a special Opening Torpedo Salvo.

• On those nodes, regular oTorp will not work,
• This can only be deployed by SS, SSV, and the AV Mikuma Kai Ni Toku, Nisshin A, and Mizuho Kai fast,
  • They must carry at least one Ka-Tsu tank,
• On the "atoll node", ships meeting those requirements will carry out a special opening torpedo attack,
• In night battle, those ships will additionally trigger the same attack as a cutin,
  • This attack overrides regular Night Cut-ins attacks (e.g. if a ship is setuped for a TCI, it will still trigger the Ka-Tsu attack).
• Using several Ka-Tsu tanks on a same ship will make it carry out several of those attacks in a row (day and night),
  • It capped at 2 attacks per ship at night.
  • This attack utilizes a new special animation, with the tank climbing the atoll's soil.

Phase 4: Boss 4

• STF: 1BBV, 0-1 CAV, 3-5 CL, 0-1 DD/DE + 1 CL, 3-5 DD, 0-2 DE
• Route: 3 T U V X Z
  • LoS check: ??
  • LBAS range: 10
• As the flagship boss is a submarine, it possible and heavily advised to focus the fleet on OASW and snipe the boss.
• As many OASW as possible ships should be utilized in the escort fleet
• The main fleet should maintain high ASW, with additional roles such as:
  • One AACI ship,
  • FCF FCF on the flagship,
  • / on the BBV/CAV/CL for air power
  • Smokes for better on route survability.
  • LoS ships for routing.
• The LBAS can be either:
  • ASW focused to kill the boss,
  • Surface focused to clear the boss escort or the pre-boss nodes.
• As it is a combined fleet, it is possible to kill the submarine boss even on night battle.

Phase 4.5: Debuff

Once LD has been reached, the following steps have to be performed to debuff the boss.

• Debuff might be optional for most players, as the boss ASW snipe is generally enough to kill the boss.

	?	?	?
Hard	?	?	?
Medium	?	?	?
Easy	?	?	?
Casual	?	?	?

	AS
Hard
Medium
Easy
Casual

Once Debuff is complete the CG will change to the following:

Abyssal I-go Water Princess
Regular Last Dance Debuffed