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Underway Replenishment

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No.146 洋上補給
Supplies Icon.png Supplies
Effects: Armor-2
Replenishes fuel and ammo of fleet when low
Scrap value: Fuel 30 Ammo 30 (Unbuildable)

Equipment Card Underway Replenishment.png

Equipment Character Underway Replenishment.png

Equipment Item Underway Replenishment.png

Equipment Full Underway Replenishment.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



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.)

Inventory Description


Replenish your fleet with fuel and ammunition at sea during a combat voyage. Please support the fleet decisive battle! (Consumed on use)


Example of Underway Replenishment translated.

Supplies Underway ReplenishmentUnderway Replenishments are consumable items that are used to 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

Purchasable: 300 DMM points for 2

Stock equipment of: Hayasui KaiHayasui Kai, HayasuiHayasui

From quest: 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 quest: 2101LQ6 (choice), 2103LQ1 (x3, choice), 7thAnvLB3 (x7, choice), SB56 (choice), SN10, W20D1 (x2, choice), 2201 LB05 (choice), 2301 B5 (choice)

Event reward for:


Used by quest: F109 (x4)

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