Passenger ship (Cruise Passenger ship) · Marshall Islands flag · built 1999

SIRENA

IMO 9187899 MMSI 538006842EU ETS7 reporting years

CO₂ reported 2025: 22,530 t
Fuel burned: 7,062 t
Time at sea: 3,066 h
Emitted at berth: 16% of total
Share of year under way: 35%
Gross tonnage: 30,277

SIRENA — Erik Christensen, CC BY-SA 3.0 · File

Vessel particulars

IMO number: 9187899
MMSI: 538006842
Ship type: Passenger ship (Cruise Passenger ship)
Gross tonnage: 30,277
Length overall: 181.0 m
Beam: 30.0 m
Year built: 1999
Flag state: Marshall Islands
Builder: Chantiers de l'Atlantique
Port of registry: Majuro
Technical efficiency (design): EEXI (15.55 gCO₂/t·nm)
Operator: Oceania Cruises, Princess Cruises, Oceania Cruises, Princess Cruises
Verifier: DNV, Germany
Accreditation: VS-16026-01
Compliance document issued: 2026-03-02
Compliance document expires: 2027-06-30

Flag state is derived from rapportert, not reported directly, and reflects the registry at the time of reporting.

Reported CO₂ by year

Between 2018 and 2025 reported CO₂ rose by 89.1%. No return is recorded for 2021, so the series has gaps.

From 2024 to 2025, emissions rose 15.1% and CO₂ per nautical mile rose 1.5%.Distance was not reported for both years, so activity and efficiency cannot be separated here.

Annual returns2018–2025

Year	CO₂ (t)	Fuel (t)	Distance (nm)	At sea (h)	At berth (t)	kg CO₂/nm	EEOI	Percentile
2025	22,530	7,062	—	3,066	3,610	515.7	—	—
2024	19,570	6,117	—	2,801	3,627	507.9	—	—
2023	23,968	7,476	—	3,600	4,528	472.8	—	—
2022	23,446	7,313	—	4,014	2,531	504.8	—	—
2020	920	287	—	125	49	496.7	—	—
2019	20,915	6,662	—	2,665	5,138	539.0	—	—
2018	11,916	3,812	—	1,354	1,584	609.8	—	—

Where the 2025 emissions occurred

Methane, nitrous oxide and EU ETS2025

Total CO₂ equivalent: 22,877 t
Methane (CH₄): 0.35 t
Nitrous oxide (N₂O): 1.27 t
Under EU ETS: 16,909 t, 75% of total

Observed movementsAIS · Norwegian waters

First seen: 10 Jul 2025
Last seen: 11 Jul 2026
Days observed: 19
Positions: 1,654
Median speed: 13.8 kn

400 points sampled hourly from 1,654 recorded positions. The filled circle is the first observed position, the open one the last. Named squares are ports, shown for orientation; they are not recorded calls.

Positions recorded per month

Norwegian waters only, 01 Jul 2025 to 27 Jul 2026. A gap here means the vessel was not recorded in that area. It is not evidence that the vessel was idle, and not evidence that a transponder was switched off. Voyages elsewhere are outside this dataset.

Port state inspectionsUnited States waters

Date	Port	Authority	Deficiencies	Outcome
2024-11-19	STATEN ISLAND, New York	USCG	—	Released
2023-11-28	Miami Beach, Florida	USCG	—	Released
2022-11-17	Miami Beach, Florida	USCG	—	Released
2022-11-14	Miami Beach, Florida	USCG	—	Released
2020-04-08	MIAMI, Florida	USCG	—	Released
2020-04-01	MIAMI, Florida	USCG	—	Released
2019-11-21	Miami Beach, Florida	USCG	—	Released
2018-10-03	Miami Beach, Florida	USCG	—	Released
2018-05-04	Miami Beach, Florida	USCG	—	Released
2017-12-05	San Diego, California	USCG	—	Released
2017-10-08	Miami Beach, Florida	USCG	—	Released
2017-05-03	PAGO PAGO, American Samoa	USCG	—	Released
2016-10-18	STATEN ISLAND, New York	USCG	—	Released
2016-03-09	Miami Beach, Florida	USCG	—	Released
2015-12-18	Miami Beach, Florida	USCG	—	Released
2015-03-03	PAGO PAGO, American Samoa	USCG	—	Released

Verifier history

From reporting year	Verifier	Accredited in
2018	Lloyd's Register Quality Assurance Ltd	United Kingdom
2020	HELLENIC LLOYD'S S.A.	Greece
2022	DNV	Germany

A change of accredited verifier is shown because it matters for audit and data continuity. It is not in itself a sign of anything being wrong.

Sources and how to read this

Emissions: EU MRV publication (THETIS-MRV), reporting years 2018–2025, published by the European Commission.
Vessel particulars: Wikidata (CC0) and Wikimedia Commons.
Movements: Norwegian Coastal Administration open AIS extract.
Inspections: USCG PSIX.

What this page is built on

Reporting years: 7
Ranked by efficiency: no
Vessel particulars: 5 of 5
Movement data: yes
Name history: none recorded
Photograph: yes
Sanctions record: none
Inspection record: yes

Caveats that apply to every vessel page

EEOI above 100,000 is withheld. Those values come from returns where reported transport work is near zero, which makes the ratio meaningless rather than extreme. Median across the dataset is around 12.

Emission categories overlap. In the MRV return, emissions at berth are also counted inside the voyage legs, so the categories do not sum to the total. They are shown side by side rather than stacked for that reason.

Distance is derived, intensity is reported. The MRV return publishes CO₂ per nautical mile but not the distance itself, which is null in all 106,564 rows of the source. The distance column is therefore filled from the ranking step, which reconstructs it, and is blank for years where a vessel was not ranked. That is why a row can show an intensity without a distance.

Percentile is within type and year. It is the vessel's position among qualifying ships of the same type that year, where lower is more efficient. A blank means the vessel did not qualify for ranking that year.

Sister ships share a builder, a type and a build year within two years of this vessel. That holds hull and machinery roughly constant and leaves operation as the variable, which is why they are listed before nearest-by-tonnage.

Methane and nitrous oxide start in 2024. They were not reported before that period, so earlier years cannot be compared against them.

Technical efficiency is a design figure fixed at construction. A vessel can hold a good index and still emit heavily by sailing fast, waiting at anchor or carrying little.

Inspection records cover United States waters only. An empty record is not evidence of a clean history elsewhere.

Empty means unreported, never zero. Nothing here is modelled, estimated or interpolated. See the methodology.

Something wrong on this page? See corrections. We do not hold the source registers and cannot amend them, but we will fix anything we have got wrong in reproducing them.