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Underway Replenishment

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Underway Replenishment

No.146 洋上補給

Underway Replenishment Supplies

Effects: Armor-2

Scrap Value: Fuel30 Ammunition30

Equipment Card Underway Replenishment.png

Equipment Character Underway Replenishment.png

Equipment Item Underway Replenishment.png

Equipment Full Underway Replenishment.png

Refittable Class
Coastal Defense ShipDestroyer
Light CruiserTorpedo Cruiser
Heavy CruiserAviation Cruiser
BattleshipAviation Battleship
Fast BattleshipLight Carrier
Standard CarrierArmored Carrier
Seaplane TenderSubmarine Tender
SubmarineSubmarine Carrier
Repair ShipTraining Cruiser
Fleet OilerAmphibious Assault Ship


戦闘航海中の海上で燃料弾薬を補給することが可能です。 これを保持した状態で燃料が欠乏すると戦闘航海中に「洋上補給」が発動し、燃料弾薬が洋上で「補給」されます。 長期戦となる艦隊決戦のサポートにご活用ください。 (発動すると消滅します。)

It's possible to perform resupply on the seas to ships performing combat sailing.
When fuel is low while this is being held, "Maritime Resupply" will happen, and fuel & ammo will be replenished on the seas.
Please use this well as a support for the final battle, which could become a war of attrition.
(Will disappear when activated.)


Underway Replenishment "Underway Replenishment" are consumable items:

  • As "consumables", they do not take any equipment slot and appear in the Inventory.
Example of Underway Replenishment translated.

Fleet Oilers (AO) can carry Underway Replenishment Underway ReplenishmentUnderway Replenishments (including the RE) that will restore fuel and ammo mid-sortie when consumed.

  • When entering a boss node, a prompt will appear giving a choice to use the Underway Replenishment(s) or not.
  • The cost of the resupply will be deducted from the stockpile.
  • The resupply cannot be activated when having insufficient Fuel fuel or Ammunition ammo.
  • The amount of Fuel fuel and Ammunition ammo resupplied depends on
    • The fleet type (single or combined)
    • How many Resupplies are carried.

The resupply rates are as follow:

Item Icon Underway Replenishment.png Used Single Fleet Combined Fleet
1 25 % 15 %
2 36 % 27.5 %
3 47 % 40 %

This mechanic should only be used to avoid Fuel penalty or/and Ammo penalty.

How To Obtain


Stock equipment of Hayasui KaiHayasui Kai, HayasuiHayasui

From quests: Bq3, Bq8 (x4, choice), Bq10 (x4, choice), By3, B79, B86, B107, B112 (x2, choice), B142 (x3, choice), B143 (x2, choice), B149 (x3, choice), B158 (x2, choice), B159 (x2, choice), C29 (choice), C33 (x2, choice), D27 (x2), D28 (x2, choice), D29 (x5, choice), D32 (x2, choice), D33 (x2, choice), D35 (x3, choice), D38 (x2, choice), F41

From limited-time quests: 2101LQ6 (choice), 2103LQ1 (x3, choice), 7thAnvLB3 (x7, choice), SB56 (choice), SN10, W20D1 (x2, choice), 2201 LB05 (choice)

Event reward for:

Updates History

  • 2015-08-10: Implemented
  • 2016-04-01: Mechanics changed: used when fleet's total fuel+ammo is 25% or less -> can be chosen to be used before boss battles

See Also