The Sirena was built in 1999 and is among Oceania’s 6 ships in its fleet. The null is included in the cruise line’s null Class. In the cruise ship stats below, you’ll find the Sirena vs all of the other Oceania ships.

Sirena Size

How big is the Sirena? Below, you’ll find all of the relevant cruise ship stats, specs and dimensions for the Sirena. Included in these statistics are passenger capacity, length, year built, year renovated, cost to build, gross tonnage, engine info, number of rooms, deck counts and more!

Sirena Infographic

Sirena Capacity

Passenger Capacity refers to the total number of people that the Sirena can accommodate. Of course, there are also crew members on board. Below, find the total onboard capacity, including staff and cruise guests.



Oceania Avg: 882 guests

Sirena Passenger Capacity: The passenger capacity for the Sirena is 684 guests. The average capacity for the 6 active ships in Oceania’s fleet is 882 passengers. The passenger capacity range for all Oceania ships has a minimum of 684 guests and a maximum of 1,258 passengers.


Oceania Avg: 0 staff

Sirena Crew Members: Staff on the Sirena include 0 crew members. That’s a guest to staff ratio of NA. The average Oceania ship includes 0 employees and has a passenger to staff ratio of NA.

Sirena Passenger Capacity and Crew

vs Oceania Fleet

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Sirena Length

How long is the null? From end to end, the Sirena length equals null feet (0 meters). Compare that to the average ship length of all 6 active vessels in Oceania’s fleet, measuring null feet (0 meters).

feet long

Oceania Avg: 0 feet

The smallest Oceania ship (in terms of length) measures 0 feet (0 meters) from end to end. The longest vessel spans 0 feet (0 meters).

Our chart below shows the length of the Sirena vs all other active Oceania ships.

Sirena Ship Length

vs all Oceania Ships

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Sirena Built Date

When was the Sirena Built? The Sirena was built in 1999 and joined the cruise line’s null Class.

Oceania includes 6 active ships. The oldest in the fleet was built in 1998. The average Oceania ship is 20 years old and the median build date for all active ships is 2000


built date

Oceania Avg: 2007

When was the last Sirena Dry Dock? The Sirena has not experienced dry dock improvements yet.


renovation date

Sirena Info

Frequently Asked Questions

What is the Sirena ship class?

The ship belongs to the Oceania class of ships known as the null class.

What is the Sirena capacity?

We're often asked how many passengers are on the Sirena. The ship's capacity is 684. When comparing the occupancy to the average Oceania passenger capacity, you'll find that the average ship in the fleet holds 882 guests. Feel free to look at our graph above to see where this ship falls in line with all other live Oceania ships.

Is the Sirena a good ship?

Each of Oceania's ships offers a unique layout with features and activities catered to all. Whether the Sirena is right for you will depend on your individual preferences. Do you prefer a larger or smaller ship with many or fewer guests? Are you hoping for many family activities or entertainment options for an older clientele. Our deck maps layout and activities list provide a helpful guide to what you'll find on board. Feel free to explore the see if this ship is suited towards your preferences.

How long is the Sirena?

From end to end, the Spectrum of the Seas length equals NA feet (NA meters). Compare that to the average ship length of all , active vessels in Oceania fleet, measuring NA feet (NA meters). Please see our size comparison chart above to see how this ship falls in line with all other active ships in the fleet.

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