The Cyclops Decoy Tube Upgrade Module is an upgrade for the Cyclops that, when installed, increases the capacity of the Cyclops Decoy Tube from the default one slot, to five slots, allowing the submarine to carry five Creature Decoys at a time. The Cyclops Decoy Tube Upgrade Blueprint can be unlocked from the Data Boxes in the Grand Reef, the Sea Treader's Path and the Mountains.