Determination of Vertical Ship Motion Due fo Heave, Roll, and Pitch 



1) Lift rope deployed through MIZAR center well. 



The center well of the MIZAR is approximately at the center of roll and pitch of the 

 ship. Consequently, motion due to roll and pitch are approximately equal to zero. 



yH 



'- '" "" © 



Yfl = Vp = 



2) Lift rope deployed over U-frame located at station 40 on MIZAR's main deck. All mo- 

 tions are for sea state 3. 



Heave Motion 



K^ = 3 sin I \ t = 3 sin 1.04 t 



Vertical Motion Due to Roll 



(t) 



U-FRAME 



(ROPE SUSPENSION POINT) 



r = -^23^ + 28^ = 36.4' 



23 



1 ^o 



u r, = tan — = 



28 



39.4^ 



Yfi = r \ sin ( dg + dp;) - sin dJ 



from Section G, for sea state 3, dp = +5° 



:.Yp = 36.4 sin (39.4° + 5° j - sin 39.4°\ 



Yf^ = 2.365 ft. 



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