The Regatta-class ships were built in 1998–2000 for Renaissance Cruises as a part of their R class.

[1] They have a gross tonnage of 30,277 and can accommodate a maximum of 824 passengers in 343 cabins.

Oceania referred to these collectively as the Regatta class.

Beginning in April 2012, Insignia began what was initially announced as a two-year lease to Hapag-Lloyd, who is currently operating the ship as MS Columbus 2.

In 2016, The former R Two was christened and entered service for Oceania as Sirena.