Primary use
Repeat resource loops, wreck exits, early route speed, and oxygen-efficient travel.
Mobility upgrade
Improved Fins Guide
Improved Fins matter because movement upgrades change every route, not just one fight or recipe. The page should help decide whether speed, oxygen capacity, or Wakemaker-style burst mobility is the next useful investment.
Quick answer: Improved Fins are a mobility upgrade for repeat trips, safer exits, and oxygen-efficient travel. Exact station, material cost, and speed effect need in-game confirmation.
Reviewed .
Route status
Recipe lead; exact station and movement values need an in-game check.
In-game check
Check recipe row, prerequisite Fins, station, and practical movement comparison.
Route and unlock plan
First-hour route follow-up, oxygen loops, and Wakemaker comparison.
Step 1
Build starter Fins first
Improved Fins are an upgrade path, not a replacement for the first mobility craft.
Step 2
Use them on repeat loops
Mobility pays off most when you travel the same resource and scan routes repeatedly.
Step 3
Compare with oxygen upgrades
If the blocker is time underwater, both speed and tank capacity can help; choose based on route shape.
Step 4
Verify station and effect
Speed effect, cost, and station placement should be checked before publishing exact values.
Player decisions
| Question | Status | Rule |
|---|---|---|
| Best timing | After starter mobility | Craft when you are repeating routes enough for speed to matter. |
| Main value | Route efficiency | Faster travel can reduce oxygen pressure and predator exposure. |
| Comparison | Wakemaker and Air Tank | Wakemaker helps bursts and exits; tanks increase work time; Improved Fins help every swim. |
| What to verify | Movement effect | Do not publish speed numbers until tested. |
Route confidence
Current build
Item lead
Local current-build radar exposes Improved Fins as a recipe lead.
High confidence
Use case
Mobility upgrades strongly affect route efficiency.
In-game check
Exact effect
Movement values should come from practical current-build comparison.
Live UI check
Recipe
Use live station text.
Useful links
Questions people ask
What are Improved Fins for?
They are a mobility upgrade for faster repeat routes, safer exits, and better oxygen efficiency.
Are Improved Fins better than an Air Tank?
They solve different problems. Fins reduce travel time; tanks increase underwater work time.
Can we publish swim speed values?
Not until current-build movement comparison is checked.