Submarine Supply Materials are consumed to trigger the special "Submarine Special Attack".

Description

旗葉潜水母艦によって指揮された洪水艦隊が潜水艦隊攻軸実施時に使用する補給物資です。
※同攻撃実施で消費します。

These supplies are used by submarine fleets commanded by a submarine tender as flagship during submarine attacks.
※ Consumed during the attack.

How to obtain

Shop

Purchasable in the Shop:

500 DMM points for 3.

Limited

Events and Limited Quests can reward it. Due to the uncertainty of such rewards, please check the current event/quest page for up-to-date details.

From limited-time quest: 2301 B1 (choice), 2401 B1 (choice), 2405 B3 (choice), 2501 B1 (x3, choice), 2501 Cw1 (choice, choice), 2601 Cw1 (choice, x2 choice), 2603 G2 (x6, choice)

Event reward for:

Spring 2021 Event
- E-1: Hard (x8), Medium (x5), Easy (x4), Casual (x2)
- E-2: Hard (x4), Medium (x3), Easy (x2), Casual
- E-4: Hard (x4), Medium (x3), Easy (x2), Casual
Summer 2021 Event E-2: Hard (x3), Medium (x3), Easy (x2)
Winter 2022 Event E-2: Hard (x2), Medium, Easy, Casual
Summer 2024 Event E-4: Hard (x6, choice), Medium (x5, choice), Easy (x4, choice), Casual (x3, choice)

Use

Submarine Touch

Submarine Supply Materials are essential for 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 ChuuhaModerately 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 Shouha Lightly Damaged (小破) ,
- If all 3 ships are SS(V), the 2nd and 4th ones will attack; if one of the two is ChuuhaModerately Damaged (中破), the 3rd one will attack instead.^[1]
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.

↑ [1]

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^[1].

Submarine Radars affect the trigger rate, each increasing the trigger rate by about 10 %^[2].

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 among 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.

↑ [2][3]
↑ [4]

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 Jingei Summer 2021 Special Attack Damaged 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