Motion sickness and motion characteristics of vessels at sea

摘要: Measurements of vessel motion and consequent seasickness amongst passengers have been made on six ships, two hovercraft a hydrofoil. Data are presented for 20 029 surveyed 114 voyages involving 370 hours recordings. Vomiting incidence illness rating were found to be linearly related the root-mean-square magnitude vertical z-axis acceleration. Sickness increased with increasing duration exposure measure ‘dose’ is examined as convenient way combining variables stimulus duration. High frequency in at about 0·6 Hz was less provoking sickness than similar magnitudes lower frequencies. Motion axes other correlated highly sickness, although there some intercorrelation between axes. The results enable predictions occurrence marine vessels forms transport where low oscillations encount...