Navalyze · Cruise · Ship

CELEBRITY ASCENT

IMO: 9838400
Type: Passenger ship (Cruise Passenger ship)
Port of registry: Valletta
Technical efficiency: EEXI 7.58 g CO₂/t·nm

ISM company (DoC holder) in 2025: Celebrity Cruises, Inc. · part of Royal Caribbean Group

Report year

2025 at a glance

From the 2025 THETIS-MRV report.

Fuel per mile

348.4 kg/nm

Cruise median 263.6 kg/nm (+32%)

CO₂ per transport work (pax)

321

g CO₂/pax·nm · Cruise median 521 (−38%)

Average speed

14.4 kn

Cruise median 13.1 kn (+10%)

Fuel per day at sea

120.7 t/day

Fuel consumed

13,974 t

CO₂ emitted

43,563 t

44,249 t CO₂eq incl. CH₄ and N₂O

Distance sailed

40,104 nm

CO₂ ÷ CO₂ per mile

Time at sea

2,779 h

116 days, 32% of the year

Within the cruise fleet, 2025

Set against all 202 cruise ships with a full-year 2025 report. Bigger ships burn more per mile but less per tonne of cargo, so read fuel per mile with the ship's size in mind.

Fuel per mileThis ship 348.4 kg/nm · median 263.6 (+32%)

89.6Ranks 148 of 202, lowest first415.6

Average speedThis ship 14.4 kn · median 13.1 (+10%)

10.8Faster than 70% of cruise ships15.5

CO₂ per transport work (pax)This ship 321.34 g CO₂/pax·nm · median 521.02 (−38%)

302.86Ranks 30 of 202, lowest first1,700.54

Middle 80% of shipsMiddle 50%Cruise medianThis ship

Where the emissions happen, 2025

THETIS splits each ship's CO₂ by voyage type. The split sets how much falls under the EU ETS: all of it within the EU and at berth, half of it on voyages into or out of the EU.

Between EU ports68%
From the EU7%
Into the EU11%
At berth in the EU14%

90% of this ship's CO₂ falls under the EU ETS (39,294 t).

Fuel burned laden

–

Not reported

CO₂ at berth

14.5%

Alongside in EU ports

Methane (CH₄)

0.7 t

Mainly from LNG; small for oil

CO₂eq ÷ CO₂

1.016

Uplift from CH₄ and N₂O, counted in full from 2026

Over the years

Full-year reports only. The Cruise median is the middle ship of all cruise ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.

Fuel per mile, kg/nm

CELEBRITY ASCENT
Cruise median

200.0250.0300.0350.0

’242024’252025

Average speed, kn

CELEBRITY ASCENT
Cruise median

13.013.514.014.5

’242024’252025

CO₂ per transport work (pax), g CO₂/pax·nm

CELEBRITY ASCENT
Cruise median

300400500600700

’242024’252025

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2024→2025	+1.2 kn	+3%	+13%	−5%	−8%	1.2 kn faster, fuel per mile up 3%; better than speed alone explains (hull, engine or trade).

Fuel per mile rises roughly with the square of speed for a given ship, so a change in speed explains much of a change in fuel per mile.

Every reporting year

One row per THETIS-MRV report. A ship that changed operator during a year has a part-year report for each.

Operation

Year	ISM company	Fuel t	CO₂ t	Distance nm	At sea h	Speed kn	Fuel kg/nm	CO₂ g/t·nm	Laden fuel
2025	Celebrity Cruises, Inc.	13,974	43,563	40,104	2,779	14.4	348.4	–	–
2024	Celebrity Cruises, Inc.	14,273	44,492	42,339	3,215	13.2	337.1	–	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/pax·nm	Cruise median	vs Cruise	Rank	Verifier	Methods
2025	Celebrity Cruises, Inc.	321.34	521.02	−38%	30 of 202	DNV	A
2024	Celebrity Cruises, Inc.	350.30	618.41	−43%	40 of 202	DNV	A

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Cruise ships are benchmarked on CO₂ per transport work (pax) (TW), in g CO₂/pax·nm. CO₂eq adds methane and nitrous oxide and is in the public files from 2024. Rank counts from the lowest figure among that year's cruise ships. Methods: A delivery notes, B tank monitoring, C flow meters, D direct measurement. FuelEU GHG intensity is not shown: it needs fuel types, which the public file does not carry. Operators are named only from 2024, the first year the public files carry them; earlier years belong to the ship, not to any company.