Cruise secrets: Ex ship crew member reveals unpleasant after-effect of cruises

He added: “Some people simply don’t get along with the high seas and motion sickness just gets too much for them.”

However, Catling himself actively enjoyed the feeling of being out of the water.

“Personally, I have no problem with the sway and swell of the ship and actually find it rather comforting, especially at night when you’re lying in bed and gently being rocked from side to side,” he said.

“Unless, of course, your bed faces in the wrong direction, then you end up hating it because as you lie there you end up feeling like a pointless human seesaw.”

The NHS explains ways travellers can ease motion seasickness.