Ship Emissions Register

Passenger ship (Cruise Passenger ship) · Bahamas flag · built 1991

AMBIENCE

IMO 8521232 MMSI 311001109EU ETS4 reporting years

CO₂ reported 2025
50,588 t
Fuel burned
15,830 t
Time at sea
5,444 h
Emitted at berth
11% of total
Share of year under way
62%
Gross tonnage
70,285
AMBIENCE
Farid mernissi, CC BY 4.0 · File

Vessel particulars

IMO number
8521232
MMSI
311001109
Ship type
Passenger ship (Cruise Passenger ship)
Gross tonnage
70,285
Length overall
245.1 m
Year built
1991
Flag state
Bahamas
Builder
Fincantieri
Port of registry
Nassau
Technical efficiency (design)
EEXI (12 gCO₂/t·nm)
Operator
Ambassador Cruise Line, Ambassador Cruise Line, Princess Cruises
Verifier
DNV, Germany
Accreditation
VS-16026-01
Compliance document issued
2026-02-08
Compliance document expires
2027-06-30

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

Reported CO₂ by year

2022: 28,222 t202228,2222023: 41,990 t20232024: 37,619 t20242025: 50,588 t202550,588

Between 2022 and 2025 reported CO₂ rose by 79.3%.

From 2024 to 2025, emissions rose 34.5% and CO₂ per nautical mile fell 0.3%.Distance was not reported for both years, so activity and efficiency cannot be separated here.

Annual returns2022–2025

Year CO₂ (t) Fuel (t) Distance (nm) At sea (h) At berth (t) kg CO₂/nm EEOI Percentile
2025 50,588 15,830 5,444 5,774 709.9
2024 37,619 11,734 3,895 3,496 711.8
2023 41,990 13,097 4,207 5,396 721.5
2022 28,222 8,803 3,152 2,171 699.6

Where the 2025 emissions occurred

At berthAt berth: 5,774 t5,774Within EEA portsWithin EEA ports: 5,774 t5,774Voyages between EEA portsVoyages between EEA ports: 18,447 t18,447Voyages to an EEA portVoyages to an EEA port: 12,293 t12,293Voyages from an EEA portVoyages from an EEA port: 14,074 t14,074

Methane, nitrous oxide and EU ETS2025

Total CO₂ equivalent
51,365 t
Methane (CH₄)
0.79 t
Nitrous oxide (N₂O)
2.85 t
Under EU ETS
34,458 t, 68% of total

Observed movementsAIS · Norwegian waters

First seen
22 Jul 2025
Last seen
04 Jul 2026
Days observed
42
Positions
4,524
Median speed
12.8 kn
60.0065.0070.005.0010.0015.0020.00KokkolaOsloPoriStockholmBergenHarstadHortenKarlsborgFirst observed positionLast observed position200 nm°N°E

400 points sampled hourly from 4,524 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

Jul 25: 315 positionsJul 25315Aug 25: 600 positionsAug 25Oct 25: 357 positionsOct 25Nov 25: 690 positionsNov 25Dec 25: 301 positionsDec 25Mar 26: 992 positionsMar 26Apr 26: 476 positionsApr 26Jun 26: 386 positionsJun 26Jul 26: 407 positionsJul 26407

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.

Sources and how to read this

What this page is built on

Reporting years
4
Ranked by efficiency
no
Vessel particulars
5 of 5
Movement data
yes
Name history
none recorded
Photograph
yes
Sanctions record
none
Inspection record
none in US waters
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.

Comparable vesselssister ships and nearest by tonnage