A total of 20 time-domain simulations were carried out to analyse the case matrix given in Table 2,
each with a length of 90 minutes. A total of 1000 harmonic wave components [19] were used to
adequately represent the sea spectrum specified in Section 2.
Figs. 1 and 2 present the Response Amplitude Operators (RAOs) for the heave motion of the FOWT
and WEC for Case 1, 2 and 3, respectively. A sample time history of the power absorbed by the WEC is
shown in Fig. 3, highlighting the variability of power production. Table A.1 in the Appendix presents
some statistical data concerning the power absorbed by the WEC, and the heave response of the FOWT
and WEC in the operational sea state.