Cruise Frog guide
Oceania Sirena
Oceania Sirena is a Oceania Cruises cruise ship of the Regatta class, in service since 1999. She measures 30,277 gross tons and carries 670 guests with a crew of 373. She sails Mediterranean, Asia itineraries.
About Oceania Sirena
Oceania Sirena is an R-class ship of 30,277 gross tons and about 670 guests, completed in 1999 by Chantiers de l'Atlantique as R Four for Renaissance Cruises. She later sailed for Princess Cruises as Tahitian Princess and then Ocean Princess until Oceania bought her; a 35-day, $40 million refurbishment in Marseille turned her into Sirena in 2016. She sails mainly in the Mediterranean, with voyages such as Lisbon to Rome over the 2026 holidays and Rome to Istanbul in May 2027. In July 2026 Norwegian Cruise Line Holdings agreed to sell her, and she is expected to leave the fleet after her spring 2028 season.
Ratings
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Editorial scores, 1 to 5 per metric; the overall is their average, not an average of reader reviews.
Deck plans
No deck plans on record for this ship yet.
Where she sails
Quick answers
Which cruise line operates Oceania Sirena?
Oceania Sirena is operated by Oceania Cruises and belongs to its Regatta class.
How big is Oceania Sirena?
Oceania Sirena measures 30,277 gross tons and 181 metres in length, with 9 decks.
How crowded does Oceania Sirena feel?
Oceania Sirena has a passenger space ratio of 45.2: 30,277 gross tons for 670 guests. Ratios over 50 feel spacious and under 30 busy, so Oceania Sirena feels comfortable for her size.
How many passengers does Oceania Sirena carry?
Oceania Sirena carries 670 guests at double occupancy, with a crew of 373 (about 1.8 guests per crew member).
When did Oceania Sirena enter service?
Oceania Sirena entered service in 1999 and was last refurbished in 2016.
Where does Oceania Sirena sail?
Oceania Sirena sails Mediterranean and Asia itineraries.
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