Illustrations (Continued) 



14 Example of variation of the inertia and drag coefficients of a cylinder during 



a wave cycle . . . 27 



15 Example of variation of the inertia and drag coefficients of a cylinder during 



a wave cycle . . . 28 



16 Variations of the magnitude and phase of the maximum force on cylinders . . . 29 



17 Drag force current meter . . . 31 



18 Recorder sample during run 2 (north-south) . . . 31 



19 Recorder sample during run 1 (east-west) ■ ■ ■ 32 



20 Schematic drawing of beam and cylinder . . . 32 



21 Drag force current meter example ... 33 



22 Drag force current meter example . . . 34 



23 AC + DC flow throughout one wave cycle where inertial term may be neglected 



and drag coefficient is constant; drag force current meter . . . 35 



24 Drag force meter example . . . 37 



