This guide will provide you with all the locations of the Ultra Glide fin and Swim Charge fin Databox in Subnautica.
There are multiple locations where you can find both the swim charge and Ultra glide fins databoxes. There are a total of two spots you can find the swim charge databox and there are four places you can find The ultra glide fins at.
To start off, you need to use the coral tube that sticks up out of the water as your starting point, and then head North, or about one notch to the left of north on your compass until you reach a large wreck in the underwater island biome.
When going to the underwater islands, it is recommended to bring a sea moth with perimeter defense and at least an MK1 depth module. Or better, a knife, a flashlight, and you may need a laser cutter to access certain parts of the wreck.
The main creature that will be a threat to you are Bonesharks and there are a pretty good number of them in the underwater islands. They can be very annoying if multiple of them start attacking you at the same time, you can easily be killed or your Vehicle can be destroyed. You can kill some off using your knife or perimeter defense to ward them off and make sure your sea moth is in a safe place since they may attack it even while you aren’t in it.
For the next swim charge location, you need to use the same coral tube starting point as before and head about two notches to the left southwest until you reach a large Hole in the seafloor in the grand reef biome.
When going there, it is recommended to bring a sea moth with an MK2 Depth module, perimeter defense a knife, and a sea glide. Maybe even a stasis rifle if you want to be extra careful.
The two main threats you are going to run into at this spot are warpers and crab squids. Crab squids can disable your vehicle by letting off an emp, you can dodge it if you are fast enough or you can use perimeter defense against them to make them run away Before they do their emp.
Warpers can teleport you out of your sea moth/vehicle and into the open where they can attack you if you are feeling brave. Then you can attack one using your knife and when it takes enough damage, it will warp away or you can simply outrun it if you have the sea glide in the event you get warped.
Now once you get to the hole, go down the hole and once you are in the cave, look and head north. Shortly after going north, you will find the grand reef degasi base.
To find the ultra glide fins on the first location, you need to use the same coral tube starting point, and head northeast or one notch to the right of northeast until you reach a destroyed lifepod in the grassy plateaus.
You don’t really need anything special to go there. Maybe you can have a sea moth or sea glide to reach the area faster.
As far as threats go, there aren’t really any here, other than Sand sharks but they don’t do that much damage. You can easily outrun them or kill them with your knife if you choose to.
The next location is a small wreck, which you can reach by heading south or half a notch to the left of the south until you reach a small wreck in the grassy plateaus.
All you really need to bring is a sea glide or sea moth to reach the wreck faster, and maybe a knife if you plan on fighting off Sandsharks if they appear. You will also need a laser cutter if you want to explore the entire wreck before you go.
The only creature you’ll find here that may attack you are Sand sharks which aren’t that big of a threat, to be honest, They’re just annoying when you’re trying to do stuff. You can easily avoid them or kill them using your survival knife.
The next location is Lifepod 13, you can reach this by heading about one and a half notches to the left of the northwest until you reach the Destroyed Lifepod 13 in the northwestern mushroom forest.
It is recommended to bring a sea moth with an MK1 depth module, a knife, and a sea glide to go there.
Now there aren’t many threats in this area, aside from bone sharks But there aren’t a ton of bone sharks here like there are in the Underwater islands biome. So just be careful of them if yoų do see them since they like to attack your vehicle, even while you aren’t in it.
And for the final location where you can find the databox for the Ultra glide fins, you are going to use the same starting point. Then head about one notch to the left of the southwest until you reach the floating islands.
All you need here is a sea moth or sea glide to reach the island quicker, and maybe a knife to kill cave crawlers.
There are no real threats here, the only thing that can actually hurt you on the island are cave crawlers and they do very little damage. You can easily kill them with a few kits from the knife, so they aren’t really much of a threat.
