where-
L = limit load (lbs.);
C5 = 0.0053;
VS0 = seaplane stalling speed (knots) with landing flaps extended in the appropriate position and with no slipstream effect;
W = seaplane design landing weight in pounds;
[BETA]S = angle of dead rise at a station 3/4 of the distance from the bow to the step, but need not be less than 15 degrees; and
ry = ratio of the lateral distance between the center of gravity and the plane of symmetry of the float to the radius of gyration in roll.
where-
[RHO] = mass density of water (slugs/ft.2);
V = volume of float (ft.2);
Cx = coefficient of drag force, equal to 0.133;
Cy = coefficient of side force, equal to 0.106;
K = 0.8, except that lower values may be used if it is shown that the floats are incapable of submerging at a speed of 0.8 VS0 in normal operations;
VS0 = seaplane stalling speed (knots) with landing flaps extended in the appropriate position and with no slipstream effect; and
g = acceleration due to gravity (ft./sec.2).
14 C.F.R. §25.535