Importing hydrodynamic data: RAO table headers

When importing RAOs from a text file, the following strings can be used in the header line.

Header string Column contains
WP Wave period in seconds
WFH Wave frequency in hertz
WFR Angular wave frequency in radians/second
XA Surge amplitude
XP Surge phase
YA Sway amplitude
YP Sway phase
ZA Heave amplitude
ZP Heave phase
RXA Roll amplitude
RXP Roll phase
RYA Pitch amplitude
RYP Pitch phase
RZA Yaw amplitude
RZP Yaw phase

In these header strings X, Y and Z represent the vessel axes, A denotes amplitude, P denotes phase and R rotation about the given axis.