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Introduced in Update 0.7.6, the Arsenal replaces the old Ranked/Clan Battles reward ship system. Various other items can also be bought here.





Steel can be earned through ranked and Clan battles. Supercontainers can also contain Steel.

1 Steel can be converted to 10 Coal, but Coal cannot be converted to Steel. Along with the more limited availability, this makes Steel a more precious resource than Coal.


  • Ships. Some ships can be bought for Coal; others are only available for Steel.
  • Special upgrades. These can all be purchased for Coal. Standard and legendary upgrades are not sold here.
  • Signals. All combat and regular economic signals are available for Coal in lots of 20.
  • Camouflages. A selection of camouflages is available for Coal in lots of 20.
  • Containers. Various special event containers are available for Coal in lots of 5.


Coupons can be used for a one-time discount on a purchase in the corresponding category. Only one coupon can be used per purchase.

Coupons are periodically refilled, but cannot be stockpiled---any previous coupons that were not used when a refill occurs are lost. Refill frequencies are as follows:

  • Ships (25% off): 1 coupon every 6 updates. Refill timing started with Update 0.7.6 when the Arsenal was first introduced. With a standard release cycle of 4 weeks, this means refills are expected every 24 weeks. This would imply refills on the following dates (subject to change):
  • 27 June 2018 (Arsenal introduced)
  • 12 December 2018
  • 29 May 2019
  • 13 November 2019
  • Upgrades (25% off): 1 coupon every update.
  • Signals (50% off): 2 coupons every update.
  • Signals (25% off): 2 coupons every update.
  • Camouflages (25% off): 2 coupons every update.