I tried the sonar in the Seamoth, and it just made the landscape much harder to see. I don't remember if I ever made one for the Cyclops.Did you never use the sonar or shield modules?
If you're not averse to danger, there are a bunch of supply cratesI was thinking "so what, I'll just install a power cell charger on my Cyclops," then realized the critical error in my logic. Guess I'll be spending some time fabricating some spares.
around and behind the Aurora (probably a couple in the nearby kelp forest, as well)
You can also carry enough items to build a small base with a bioreactor/thermal plant and a power cell charger if you have the patience for that sort of thing.
Fun fact: installing a charger on the Cyclops did at one point work, I think because of the engine efficiency module.