]>

Table 2: Input data for three parametric cases.

Subsystem 1 Wave period T 10 s Structure mass M 100 kg Structure width 4 m Subsystem 2 Wave period T 12 s Structure mass M 200 kg Structure width 6 m Subsystem 3 Wave period T 8 s Structure mass M 150 kg Structure width 2 m

Others are as follows. Wave amplitude $A_i$ = 0.5 m; Water depth $h\mathrm{\hspace{0.17em}\hspace{0.17em}}=\mathrm{\hspace{0.17em}\hspace{0.17em}}20$ m; Young's modulus $E={10}^7$ N/${\text{m}}^2$; Mass moment of inertia = ${10}^{-2}$ ${\text{m}}^4$; Draft $d=2$ m.