I got the ferry from Stromness to Scrabster once. A low pressure arrived on the scene just as we departed Stromness. About a quarter of a way into the journey I

I got the ferry from Stromness to Scrabster once. A low pressure arrived on the scene just as we departed Stromness. About a quarter of a way into the journey I decided I'd like a coffee, I wished I hadn't. I swear at one point, as we rolled over the crest of one wave, I experienced weightlessness, as did the contents of my disposable cup. It must be one of the very few times on public transport I've had to "clambour" back to my seat. I remained seated for the rest of the trip.