Ferry cabins are not the most spacious of suites, but Stena Line is shrinking them even further with a new ruse to lure the more cost-­conscious punter.

The shipowner has installed Japanese sleeping pods on the 38,000-gt ropaxes Mecklenburg-­Vorpommern (built 1996) and 43,000-gt Skane (built 1998), operating between Rostock in Germany and Trelleborg in Sweden.

The firm said: “The sleeping pods are a great way for young people, backpackers or campers to travel cheaply and comfortably.