© 



niirrr 



differeno between Iha totol 

 ratistanc* colculated uting 

 Schotnhtrr- Schoanharr ond thot 

 using Frouda - Frouda. 

 ^ la tha diaplocamant. 



V la Iha ipaad. 



V is the voluma of diaplocamant. 



S la tha orao of wettad aurfoca . 

 g ia tt« occalarotion dua to grovity. 



mil 'II 



Figure D4 - The Difference 5 (c) between the Froude(c) and the Schoenherr (c) 

 with a Roughness Allowance of 0.0004 



The values eiven in the contours are for a 400-foot ship having a( SJof 6.00 and operating 

 / — \ ^T~\ 



in salt water of 59°F. A positive SfClindicates that the SchoenherrfCjis higher than the 



Froude(^. 



D-13 



