|This article is about the Swim Charge Fins. You may be looking for the Fins or the Ultra Glide Fins.|
At the moment, it charges any tool held in the player's hand by 1% for every 10 meters swum. However, they do not produce enough energy to maintain the Seaglide's energy level constantly, though it still charges fast enough that it could be considered infinite.
When something is charging, the fins whirr noticeably, the whirr stops when the device is charged or nothing is equipped. The seaglide is partially powered by them, decreasing the loss of energy. Also, when you're swimming up using "space" or down using "c" it recharges the battery of the Seaglide.
The Swim Charge Fins must be placed in the feet slot of the paperdoll UI to take effect. When not worn they take up four spaces (2x2) in the inventory.
Swim Charge Fins only charge held devices when your swim speed is above 2.0 m/s. If there are too many tanks in your inventory (including paperdoll-equipped), you get slowed down too much to charge anything. Equipping the Reinforced Dive Suit also slows down swim speed. However, using the Seaglide will still result in charging due to its speed not being affected by tanks.
Swim speed with held device, Swim Charge Fins and without Reinforced Dive Suit = 4.75 m/s
|Reinforced Dive Suit||High Capacity Tank||O₂ Tank||Plasteel Tank|
Numbers appear to be rounded to 2 decimal units. Swim speed has a lower limit of 1.90m/s.
For instance, wearing a Reinforced Dive Suit, with a High Capacity Tank in the paperdoll and one O₂ tank in inventory would give a speed of:
4.75 - 0.95 - 0.61 - 0.8 = 2.39 m/s (Therefore Swim Charge Fins will work)
However, adding 2 more Plasteel Tanks to the inventory will bring the swim speed to below 2.0 m/s, thus preventing charging.
Swim Charge Fins do not work in Alien Containment, despite a much higher swim speed while inside one.