10 

 Extreme 



510"' 10' 5.10 10' 



Wave Steepness, {HS.0137A0J = j(Hs + 5.6o-)/{g Ts^/2 7r)l 



Figure 3. Graphical solution of equation (5) for y' = 1.6. 

 6 c: 1 1 r 



0.5 1.0 1.5 

 Argumftit, X 



Figure 4. Graph of hyperbolic sine and tangent functions. 



11 



