The Loch class are a group of smaller vessels with a single car deck, running the length of the ship, with a ramp at each end. They vary in length from . Most are symmetrical when viewed from the side, with no operational bow or stern. Passenger accommodation is down one or both sides of the ship. , and also have a lounge above the car deck. They operate on shorter crossings, usually between 5 and 30 minutes, although MV "Loch Portain" takes 70 minutes to cross the Sound of Harris between Berneray and Leverburgh.