Delivery is scheduled for November.
The 746-passenger vessel is the sister of 2020's Seven Seas Splendor and 2016's Seven Seas Explorer.
Additional inaugural sailing
Regent Seven Seas Cruises President Andrea DeMarco said Seven Seas Grandeur has proven so popular the line created an additional sailing for the inaugural season.
Orsinja Myshku, senior controller of Ancona shipyard’s economic administration and control office, served as madrina for the ceremony and cut a ribbon to smash a bottle of champagne on the bow. Gabriella Fonzo, senior director of sales, EMEA, represented Regent.
Further NCLH ships to come
Fincantieri's orderbook for Norwegian Cruise Line Holdings also includes five other Prima-class ships for Norwegian Cruise Line with Norwegian Viva coming next, and two of the new Allura class, Allura and Vista, for Oceania Cruises.