## Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volumes 1-2American Society of Mechanical Engineers, 1990 - Offshore structures |

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Page 265

(a)

amplitude. (b) roll, pitch and yaw Amplitude of each modes was divided by wave

amplitude multiplied by wave number PERFORMANCE OF FOWAD Wave Power

...

(a)

**heave**, sway and surge Amplitude of each modes was divided by waveamplitude. (b) roll, pitch and yaw Amplitude of each modes was divided by wave

amplitude multiplied by wave number PERFORMANCE OF FOWAD Wave Power

...

Page 579

The phenomenon of

the pitch responses (Figs 27, 30, ... that as speed increases, the large pitch

response occurs at

frequency.

The phenomenon of

**heave**and pitch coupling effect in speeds can be seen inthe pitch responses (Figs 27, 30, ... that as speed increases, the large pitch

response occurs at

**heave**resonant frequency instead of pitch resonantfrequency.

Page 580

Table 3, Natural periods of around 200 tonnes SWATH ships Units are metric The

A33> -J SAw.p (19) where Aw p is the waterplane area and A'33=A33/M. The ...

Table 3, Natural periods of around 200 tonnes SWATH ships Units are metric The

**heave**natural period of a surface ship is given by the equation:**HEAVE**-2n /V(1 +A33> -J SAw.p (19) where Aw p is the waterplane area and A'33=A33/M. The ...

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added mass amplitude analysis array calculated circular cylinder component crest damping coefficient direction displacement distribution domain drag coefficient drag force drillship dynamic effect element equation estimated flexible riser floating flow fluid force coefficients forces acting foroe forward speed free surface heave horizontal hydrodynamic hydrodynamic forces incident wave integral irregular Kc number lift force linear load low-frequency low-frequency oscillation matrix maximum measured method mooring line motion nonlinear obtained Offshore Mechanics Offshore Structures Offshore Technology Conference oscillation oscillatory parameters pile plate prediction pressure problem ratio Rayleigh distribution regular waves response Reynolds number Sarpkaya seastates second-order semisubmersible ship shown in Figure simulation solution spectra spectrum surge tension transfer function transverse vector velocity potential vertical viscous vortex vortex shedding vortices water depth wave amplitude wave excitation wave force wave frequency wave height wave number wave period wave power