  The paper presents a system for simulating surfing in Virtual Reality (VR),
emphasizing the recreation of aquatic motions and user-initiated propulsive
forces using a 6-Degree of Freedom (DoF) motion platform. We present an
algorithmic approach to accurately render surfboard kinematics and interactive
paddling dynamics, validated through experimental evaluation with \(N=17\)
participants. Results indicate that the system effectively reproduces various
acceleration levels, the perception of which is independent of users' body
posture. We additionally found that the presence of ocean ripples amplifies the
perception of acceleration. This system aims to enhance the realism and
interactivity of VR surfing, laying a foundation for future advancements in
surf therapy and interactive aquatic VR experiences.
