Time history and FFT of Motions data

1. Static drift data

where,

a = 0.08/s

f_tr = 0.255 Hz

^{Heave and pitch natural frequencies: f}₃ ^{= f}₅ ^{= 1.2 Hz  (Irvine et al., 2008)}

2. Dynamic tests data

• f_PMM = 0.134 Hz

• 2f_PMM = 0.268 Hz ≈ f_tr