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21inch 6-tube Bow Torpedo Launcher (Initial Model)

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No.440 21inch艦首魚雷発射管6門(初期型)
Torpedo.png Submarine Torpedo
Effects: Torpedo+10 Evasion+2 RangeShort
Scrap value: Fuel 3 Ammo 3 Steel 2 Bauxite 2 (Unbuildable)

Equipment Card 21inch 6-tube Bow Torpedo Launcher (Initial Model).png

Equipment Character 21inch 6-tube Bow Torpedo Launcher (Initial Model).png

Equipment Item 21inch 6-tube Bow Torpedo Launcher (Initial Model).png

Equipment Full 21inch 6-tube Bow Torpedo Launcher (Initial Model).png

Refittable Class
Coastal Defense Ship Destroyer
Light Cruiser Torpedo Cruiser
Heavy Cruiser Training Cruiser
Aviation Cruiser Fast Battleship
Battleship Aviation Battleship
Light Carrier Standard Aircraft Carrier
Armored Carrier Seaplane Tender
Submarine Aircraft Carrying Submarine
Submarine Tender Fleet Oiler
Repair Ship Amphibious Assault Ship



A torpedo weapon developed and deployed by the US Navy.
Though possible to launch an attack against surface targets with 6 tubes, early torpedoes were unreliable and many opportunities were missed.
Conversely, the more reliable late-model torpedoes would menace Japanese convoys, escort vessels, and front-line combatants.


Torpedoes are almost exlusively used to trigger Night Cut-Ins, especially the Torpedo Cut-In (TCI). Their main stat is the "torpedo" Torpedo Attack stat.


How To Obtain

Event reward for:

Updates History

  • 2021-11-19: Implemented as Event Reward
  • 2022-01-21: Became improvable

Fit Bonuses

Ship Extra Requirement Firepower Torpedo Attack Anti-Air Anti-Submarine Warfare Line of Sight Armor Evasion Note
ScampScamp +2


Type Name Resource Day 2nd Ship Note
Fuel Ammunition Steel Bauxite Item Icon Development Material.png Item Icon Improvement Material.png # of equipment needed for that upgrade. An asterisk following the number indicates a different equipment is required. Sun Mon Tue Wed Thu Fri Sat
Torpedoes 21inch 6-tube Bow Torpedo Launcher (Initial Model) 0 80 140 60 50 2/3 2/2 2xTorpedo.png S X X X X S S ScampScamp Will eventually become upgradable to the 21inch 6-tube Bow Torpedo Launcher (Late Model)21inch 6-tube Bow Torpedo Launcher (Late Model)
6 3/6 2/3 2xTorpedo.png
10 - - -
Improvement Improved effects
Submarine TorpedoesSub 1★ 2★ 3★ 4★ 5★ 6★ 7★ 8★ 9★ Max★
Torpedo Attack 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0

See Also

Mark 14 torpedo