Navalyze · Container · Ship

MAERSK CHICAGO

IMO: 9332975
Type: Container ship
Average cargo carried: 69,637 t
Port of registry: Norfolk
Technical efficiency: EEDI 15.56 g CO₂/t·nm

ISM company (DoC holder) in 2025: Maersk Line, Limited-USA · part of Maersk

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 69,637 t of cargo on average.

Fuel per mile

235.2 kg/nm

Container median 177.0 kg/nm (+33%)

CO₂ per transport work (cargo)

10.52

g CO₂/t·nm · Container median 16.30 (−35%)

Average speed

17.6 kn

Container median 13.3 kn (+32%)

Fuel per day at sea

99.2 t/day

Fuel consumed

3,072 t

CO₂ emitted

9,568 t

9,719 t CO₂eq incl. CH₄ and N₂O

Distance sailed

13,061 nm

CO₂ ÷ CO₂ per mile

Time at sea

743 h

31 days, 8% of the year

Within the container fleet, 2025

Set against all 2,208 container 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 235.2 kg/nm · median 177.0 (+33%)

78.8Ranks 1,535 of 2,208, lowest first302.4

Average speedThis ship 17.6 kn · median 13.3 (+32%)

9.1Faster than 98% of container ships16.0

CO₂ per transport work (cargo)This ship 10.52 g CO₂/t·nm · median 16.30 (−35%)

7.22Ranks 629 of 2,208, lowest first46.89

Middle 80% of shipsMiddle 50%Container 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 ports0%
From the EU26%
Into the EU74%
At berth in the EU0%

50% of this ship's CO₂ falls under the EU ETS (4,800 t).

Fuel burned laden

100%

0% in ballast or unladen

CO₂ at berth

0.3%

Alongside in EU ports

Methane (CH₄)

0.2 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 Container median is the middle ship of all container ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.

Fuel per mile, kg/nm

MAERSK CHICAGO
Container median

160.0180.0200.0220.0240.0

’182018’192019’202020’212021’222022’232023’242024’252025

Average speed, kn

MAERSK CHICAGO
Container median

12.014.016.018.0

’182018’192019’202020’212021’222022’232023’242024’252025

CO₂ per transport work (cargo), g CO₂/t·nm

MAERSK CHICAGO
Container median

5.010.015.020.025.0

’182018’192019’202020’212021’222022’232023’242024’252025

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2024→2025	+0.2 kn	+3%	+4%	−85%	−4%	Same speed, fuel per mile up 3%; in line with the speed change.
2023→2024	+1.7 kn	+19%	+31%	+53%	+18%	1.7 kn faster, fuel per mile up 19%; in line with the speed change.
2022→2023	−0.6 kn	−10%	−13%	+9%	−9%	0.6 kn slower, fuel per mile down 10%; in line with the speed change.
2021→2022	−0.5 kn	+0%	−3%	−7%	−7%	0.5 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+1.0 kn	+1%	+7%	+2%	−2%	1.0 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2019→2020	−1.3 kn	−3%	−11%	−1%	+5%	1.3 kn slower, fuel per mile down 3%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	+0.8 kn	−2%	+3%	−8%	−1%	0.8 kn faster, fuel per mile flat; 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	Maersk Line, Limited-USA	3,072	9,568	13,061	743	17.6	235.2	10.52	100%
2024	Maersk Line Ltd-USA	19,999	62,283	87,544	5,036	17.4	228.4	10.93	100%
2023	not published	10,951	34,107	57,060	3,626	15.7	191.9	9.23	100%
2022	not published	11,126	34,650	52,188	3,203	16.3	213.2	10.10	100%
2021	not published	11,902	37,071	56,057	3,336	16.8	212.3	10.81	–
2020	not published	11,573	36,065	54,948	3,469	15.8	210.6	11.08	100%
2019	not published	12,069	37,592	55,325	3,229	17.1	218.2	10.56	100%
2018	not published	13,287	41,404	59,908	3,674	16.3	221.8	10.64	100%

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Container median	vs Container	Rank	Verifier	Methods
2025	Maersk Line, Limited-USA	10.52	16.30	−35%	629 of 2,208	ABS	C
2024	Maersk Line Ltd-USA	10.93	17.52	−38%	517 of 1,974	ABS	C
2023	not published	9.23	19.40	−52%	327 of 1,899	ABS	C
2022	not published	10.10	19.13	−47%	327 of 1,825	ABS	C
2021	not published	10.81	17.90	−40%	385 of 1,781	ABS	C
2020	not published	11.08	17.58	−37%	446 of 1,797	ABS	C
2019	not published	10.56	18.88	−44%	365 of 1,788	ABS	C
2018	not published	10.64	20.22	−47%	300 of 1,705	ABS	C

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Container ships are benchmarked on CO₂ per transport work (cargo) (TW), in g CO₂/t·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 container 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.