Navalyze · Container · Ship

MAERSK CHICAGO

IMO: 9332975
Type: Container ship
Average cargo carried: 69,637 t
Flag (estimated): United States
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

2018 at a glance

From the 2018 THETIS-MRV report. Carries about 64,956 t of cargo on average.

Fuel kg/nm

222

Container median 182 kg/nm (+22%)

CO₂ per transport work (cargo)

10.6

g CO₂/t·nm · Container median 20.2 (−47%)

Average speed

16.3 kn

Container median 13.8 kn (+18%)

Fuel per day at sea

86.8 t/day

Fuel consumed

13,287 t

CO₂ emitted

41,404 t

Distance sailed

59,908 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,674 h

153 days, 42% 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 kg/nmThis ship 235 kg/nm · median 177 (+33%)

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

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 10.5 g CO₂/t·nm · median 16.3 (−35%)

7.22Ranks 629 of 2,208, lowest first46.9

Middle 80% of shipsMiddle 50%Container medianThis ship

Where the emissions happen, 2018

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 EU48%
Into the EU52%
At berth in the EU1%

Fuel burned laden

13,287 t

100% of all fuel; 0% in ballast or unladen

CO₂ at berth

257 t

0.6% of the ship's CO₂, alongside in EU ports

Methane (CH₄)

–

Mainly from LNG; small for oil, biofuel and methanol

CO₂eq uplift

–

CO₂eq on top of CO₂ alone, from CH₄ and N₂O

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 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	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	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	Hours at seah	Average speedknots at sea	Fuel kg/nmthis ship	CO₂ per transport work (cargo)g/t·nm, this ship	Laden fuel
2025	Maersk Line, Limited-USA	3,072	9,568	13,061	743	17.6	235	10.5	100%
2024	Maersk Line Ltd-USA	19,999	62,283	87,544	5,036	17.4	228	10.9	100%
2023	not published	10,951	34,107	57,060	3,626	15.7	192	9.23	100%
2022	not published	11,126	34,650	52,188	3,203	16.3	213	10.1	100%
2021	not published	11,902	37,071	56,057	3,336	16.8	212	10.8	–
2020	not published	11,573	36,065	54,948	3,469	15.8	211	11.1	100%
2019	not published	12,069	37,592	55,325	3,229	17.1	218	10.6	100%
2018	not published	13,287	41,404	59,908	3,674	16.3	222	10.6	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	10.5	16.3	−35%	629 of 2,208	ABS	C
2024	Maersk Line Ltd-USA	10.9	17.5	−38%	517 of 1,974	ABS	C
2023	not published	9.23	19.4	−52%	327 of 1,899	ABS	C
2022	not published	10.1	19.1	−47%	327 of 1,825	ABS	C
2021	not published	10.8	17.9	−40%	385 of 1,781	ABS	C
2020	not published	11.1	17.6	−37%	446 of 1,797	ABS	C
2019	not published	10.6	18.9	−44%	365 of 1,788	ABS	C
2018	not published	10.6	20.2	−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.