The cruise line’s 67,000 tonne, 1,200-guest vessel touched water for the first time on Friday (25 February).
Giuseppe Torrente, shipyard director for Fincantieri, was joined by Monsignor Tasca, archbishop of Genoa.
The shipyard’s Madrina, Anna Trucco, released a bottle of prosecco against the hull to invite "good fortune" for the ship and those that will sail on it.
Howard Sherman, president and chief of Oceania Cruises, said Vista is the "most anticipated" ship in the company’s history.