[en] We demonstrate the off-shell sensitivity of second-order polarization observables in elastic N-d scattering by means of the spin-correlation parameter Csub(y,y). For the N-N interaction we start with the Paris potential and then generate on-shell equivalent separable potentials with different off-shell properties. The results for Esub(d)d = 10 and 20 MeV reported here show sizeable off-shell effects, which can be related to the different potential behavior in the inner region r approximately 1.2 fm. (Author)