are given in nautical miles. To eliminate conversion of units from the 

 basic data, we take as follows: 



AS , AS ^ feet 

 X y 



Ax -^ nautical mile 



2 

 g -^ ft/sec 



D -^ feet 



2 2 

 A, B ^ mi /hr 



V -> mi^/hr 



f -> 1/hr 



At -> hr 



On this basis the pertinent equations become 



,.„ .n+1 203 Ax ,. A -> /or^ 



(AS ) , = r— (A. + A. ,) (251 



i+Js 



..„ .n+1 106 Ax 



(AS ) . 1 = T— 



y i+*S ^n+l 



(sine). + (sine). .1 v"^^ (26) 



.n+ln ,^ ,,n 



^n.l 1/2 [(B. .B.^^)". (B. .B.^p-] At.V'/^^ 

 '**^ ■ 1 + (5280)2 I n I ^^ K(D-2)^;;^ 



(B, + B. ,) I (D ). , 



V-Ii ^J^-^ i^V-^ ^^ (28) 



'^ ^ 2 (5280) K 



When using the above equation, one should ensure that the units used are 

 consistent with those specified above. 



