The MS Sirena, formerly known as R Four, Tahitian Princess, and Ocean Princess, is a notable R-class cruise ship with a rich service history. Originally built in 1999 under the flag of Renaissance Cruises, the vessel was owned by a group of French investors rather than Renaissance itself. The ship’s construction details, such as tonnage, length, or passenger capacity, are not specified on the Wikipedia page, but it is identified as one of the smallest vessels in its fleet during its time with Princess Cruises. Initially named R Four, the vessel was part of the Renaissance fleet until the company’s bankruptcy in 2001, after which it was seized by creditors along with the other ships. In 2002, Princess Cruises entered a two-year lease for R Four and her sister ship, R Three (later Pacific Princess). During this period, the vessel was renamed Tahitian Princess and was integrated into the Princess fleet, serving as a smaller, more intimate cruise option. Following the lease, Princess Cruises purchased both ships. In November 2009, the vessel was renamed Ocean Princess to better reflect a broader, more global theme. Her service as Ocean Princess continued until 2016, when she was sold to Oceania Cruises for $82 million. Prior to her transfer, she underwent a significant refurbishment in Marseille, France, lasting 35 days and costing approximately $40 million, to prepare her for her new role. The ship was officially renamed Sirena on 27 April 2016 and entered service for Oceania Cruises. The vessel’s significance lies in its versatile history, transitioning from the Renaissance fleet to Princess Cruises, and finally to Oceania Cruises, illustrating its adaptability and enduring presence in the cruise industry over nearly two decades.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.