Aurora ‍ '​s Atrium. Aurora is a mid-sized cruise ship, with an overall length of 270.0 metres (885 ft 10 in), moulded beam of 32.2 metres (105 ft 8 in) and draught of 7.90 metres (25 ft 11 in).Her gross tonnage is 76,152 and her deadweight tonnage is 8,486 tonnes.urora ‍ '​s Atrium. Aurora is a mid-sized cruise ship, with an overall length of 270.0 metres (885 ft 10 in), moulded beam of 32.2 metres (105 ft 8 in) and draught of 7.90 metres (25 ft 11 in).