File:S2 Swim Speed Up Chart.png

Formula
Note on units of measurement: There are 50 of the game's internal distance units (DU) per line in the testing area. There are 60 frames (f) per second in the game.

A = Ability Points = 10 &times; Mains + 3 &times; Subs

Swim Speed with Light Weapon (DU/f) = [base speed] &times; (1 + (0.99 &times; A &minus; (0.09 &times; A)2 ) / 150)

Swim Speed with Normal Weapon (DU/f) = [base speed] &times; (1 + (0.99 &times; A &minus; (0.09 &times; A)2 ) / 120)

Swim Speed with Heavy Weapon (DU/f) = [base speed] &times; (1 + (0.99 &times; A &minus; (0.09 &times; A)2 ) / 80)