Gard warns about the dangers of walking up or down stairs at ships. As it says, seafarers should always apply the old adage of ‘one hand for yourself and one for the ship’ and keep one hand free to grasp the handrail.
According to the UK Health and Safety Executive (HSE UK), the highest chance of a person falling in a staircase is during the swing phase of the trailing leg. The injuries sustained by a person when walking down the stairs are more serious compared to a fall occurring when walking...
https://safety4sea.com/how-to-safely-walk-the-stairs-on-ships/