First Order Wave Force Transfer Function The first order wave force transfer function represents linear wave induced excitation forces on SIMO bodies of type 6 DOF - time domain (Body type 1) and Prescribed (Body type 3). For bodies of type 6 DOF - separated analysis (Body type 2), the first order wave force transfer function is dummy input, while for 3 DOF - time domain (Body type 4) it is not allowed. See also Separation of motions. The first order wave force transfer function is imported from WADAM or other supported boundary element code. First Order Motion Transfer Function Diffracted Wave Elevation