If you come up short, your next best bet is to search the Aurora itself, specifically the cargo bay and Prawn bay. Firstly, you should do as you did with the others and scan the Mushroom Forest. There are a bunch of locations in which you can find engine fragments. As with the bridge, your best bet is to build a scanner room and follow the signal. The locations for this component are fewer than the others, being found only in the Mushroom Forest and along the Sea Treader’s Path. It’s also pretty safe, though there’s something to be said for scurrying about under the nose of a Reaper Leviathan. The reason behind this specific location is that fragments for the other components spawn here too, making your search that bit easier. Your best bet for finding these fragments is to build a scanner room near the Mushroom Forest, equip a HUD chip, then set off in search of the fragments. Bridge fragments also spawn in the Mushroom Forest, in addition to the Sea Treader’s Path. The bridge is possibly the first component for which you will find fragments, as they can spawn near the Aurora crash zone. With the HUD chip equipped, you’ll have no problem finding the fragments assuming your scanner is in range to locate them. To make things easier, you should build a scanner room and search for components. Each component will have fragments dotted about in various areas, so you’ll need to prepare for a bit of exploration.

The Cyclops is no different, requiring three scans of three different components before you can build the submersible.

In Subnautica, you must scan fragments of damaged bits of machinery in order to unlock blueprints.

Cyclops engine fragments map