Explain how regulations can put dogs at risk on a ferry line?

I would like to share my experience of transporting my dogs on board a Stena Lines ferry from Cherbourg to Rosslare, earlier this month.

Upon boarding, at 7pm, I was surprised that my car — I had two dogs inside — was directed to the upper deck (deck 6), which is an open deck. On all previous sailings with animals in a car, I parked on a lower, covered deck.

I raised the issue with the staff who were supervising the boarding, explaining the dangers of the dogs being left in a small car that would be exposed to the heat of the sun for several hours. They told me there was nothing they could do about it.