Mariners must adjust their dynamic body orientation in response to ship motion. Despite this mechanical obligation, mariners also adjust standing posture in response to variations in body configuration (foot placement) and in response to changes in the difficulty of visual tasks performed while standing (e.g., Mayo, Wade, & Stoffregen, 2011; Stoffregen et al., 2011; Yu et al., 201 0). In these previous studies, participants have always faced in one direction relative to the ship (athwartship). However, ship motion occurs in 6 degrees of freedom, and differs across degrees of freedom as a function of sailing conditions. Moreover, due to the fact that ships are longer than they are wide, motion in roll will tend to differ from motion in pitch in most situations. Accordingly, postural effects that occur when facing in one direction may differ when facing in another direction. In the present study, one of our goals was to conduct direct comparisons of posture and visuallybased performance with participants bodies oriented in different directions relative to the ship.