For the wing and its attachment to the hull or main float-
where-
n = inertia load factor;
CTO = empirical seaplane operations factor equal to 0.004;
VS1 = seaplane stalling speed (knots) at the design takeoff weight with the flaps extended in the appropriate takeoff position;
[BETA] = angle of dead rise at the main step (degrees); and
W = design water takeoff weight in pounds.
14 C.F.R. §25.531