are Shipbuilding collection containers permanent?

[shugendo]

Hi guys, was waiting for this day for a year now, and it's finally here. but is Shipbuilding collection containers are permanent addition to armory or is it temporary? because the last prize is Santa's gift, so maybe only for Christmas?

[Gosttank1]

should be permanent, like the "belle epoque" containers

[Astolfo_Is_My_Waifu]

They are from last years New Year event. The collection is permanent and can be completed any time now that containers can be bought with coal, although you might receive a santa container from last year which may have different contents than current ones. The containers shouldn't be removed from the armory now that they've been added for regular resources.

[shugendo]

Thank you for fast respond