Former Names: Astra, Istra This small Portuguses run ship is good for interesting close-in itineraries at a budget price in unpretentious surroundings. The two lounges are comfortable, light and airy but can get crowded on occasion. Passengers on the Arion tend to be 45-60+ and mainly British. When all cabins have double occupancy, the ship provides a space ratio of 18.3 tons per passenger and a crew to passenger ratio of one for every 2.7 passengers. At full capacity the space ratio is 16.4 tons per passenger and the crew ratio is one to 3 passengers