Swimming skill

Swimming is a skill in Deus Ex that determines oxygen duration and swim speed while underwater. Like all skills, swimming can be leveled up by spending skill points.

Effects
Each skill level increases oxygen duration and swim speed.

Oxygen duration is increased by applying a multiplier to the base oxygen duration. The base oxygen duration without Aqualung is 20 seconds. Aqualung changes the base oxygen duration to 30, 60, 120, and 240 seconds (from tech 1 to tech 4, respectively). The swimming skill multiplied is then applied to the oxygen duration modified by Aqualung. Therefore, the combination of tech 4 Aqualung active and master skill level results in a total oxygen duration of 600 seconds (10 minutes).