* '''[[Ship Locking|Event Ship Locking/Tagging]]''' [[File:Fall 2021 Event Tag 1.png|30px]] - A mechanic that forces Admirals to use a wider variety of ship girls during events on harder difficulties.
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* '''[[Composition#Locking_Girls|Ship Heart Locking]]''' [[File:Icon Ship Lock.png|30px]] - Prevents ships from being dismantled or used as modernization.
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* '''[[Remodel_(Menu)#Equipment_Locking|Equipment Locking]]''' [[File:Icon Equipment Lock.png|30px]] - Prevents equipment from being scrapped or consumed.