A ceremonial steel-cutting in an Italian shipyard this week marked the start of construction on Viking Cruises’ second ocean-going vessel. Viking Sea is due to be completed in spring 2016. It will be the sister ship to Viking Star, already being built in the same Fincantieri yard near Venice, and Viking Sky which will be built in Ancona for delivery in summer 2016. Star is scheduled for a christening ceremony in Bergen, Norway, on May 17 next year. The virtually identical ships – the first venture into ocean cruising for river cruise giant Viking - measure 47,800 tons and will each carry 928 passengers.