Vibration

Abstract

Working and/or living on board vessels imposes a series of generally low-frequency mechanical vibration, as well as single-impulse shock loads on the human body. Low-frequency vibrations are also imposed by vessel motions, which are produced by the various sea states in conjunction with vessel speed. These motions can result in motion sickness, body instability, fatigue, and increased health risk aggravated by shock loads induced by vessel slamming. Vessel slamming may be caused by dynamic impact loads being exerted on the vessel’s bottom or bow flare due to vessel size, speed, and wave conditions. Higher-frequency vibration influencing comfort is often associated with rotating machinery.