A Ro-Pax ferry study of 22 crew members found engine-room noise above 96 decibels was linked with physical fatigue, while cabins that met maritime rules still sat above health guidance for undisturbed sleep and left recovery as a human-performance concern between shifts
Engine-room noise above 96 dB(A), crew cabins that still sat above sleep guidance and fatigue scores that rose with heavier exposure gave one ferry study a clear human-performance focus. The paper followed one Ro-Pax vessel and measured what crew members actually heard during work and off-duty time, then compared those conditions with how the crew…
