I bugged it, but bringing it to discussion here.
Every single skill I checked (didn't check all), according to the description, seem to have levels 1 and 3 the same, and level 2 weaker than level 1.
For example, out of the top of my head, the cooldown time for torpedo high yield:
- Level 1: 1 min. 5 sec.
- Level 2: 1 min. 10 sec.
- Level 3: 1 min. 5 sec.
- Level 4: 1 min.
and 5 seconds less each level after. All other skills I checked show a similar effect.

Is this a description problem or is it really bugged?