Navalyze · Container · Ship

MAERSK HARTFORD

IMO: 9333008
Type: Container ship
Average cargo carried: 63,360 t
Flag (estimated): United States
Port of registry: Norfolk
Technical efficiency: EEXI 11.30 g CO₂/t·nm

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

Report year

2019 at a glance

From the 2019 THETIS-MRV report. Carries about 63,666 t of cargo on average.

Fuel kg/nm

223

Container median 174 kg/nm (+28%)

CO₂ per transport work (cargo)

10.9

g CO₂/t·nm · Container median 18.9 (−42%)

Average speed

16.5 kn

Container median 13.7 kn (+20%)

Fuel per day at sea

88.2 t/day

Fuel consumed

13,724 t

CO₂ emitted

42,779 t

Distance sailed

61,476 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,736 h

156 days, 43% 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 204 kg/nm · median 177 (+15%)

78.8Ranks 1,298 of 2,208, lowest first302

Average speedThis ship 16.6 kn · median 13.3 (+25%)

9.1Faster than 96% of container ships16.0

CO₂ per transport work (cargo)This ship 10.0 g CO₂/t·nm · median 16.3 (−38%)

7.22Ranks 574 of 2,208, lowest first46.9

Middle 80% of shipsMiddle 50%Container medianThis ship

Where the emissions happen, 2019

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 EU40%
Into the EU59%
At berth in the EU1%

Fuel burned laden

13,724 t

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

CO₂ at berth

282 t

0.7% 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 HARTFORD
Container median

160.0180.0200.0220.0240.0

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

Average speed, kn

MAERSK HARTFORD
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 HARTFORD
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	−1.3 kn	−9%	−16%	−71%	−9%	1.3 kn slower, fuel per mile down 9%; in line with the speed change.
2023→2024	+2.2 kn	+23%	+40%	+46%	+20%	2.2 kn faster, fuel per mile up 23%; better than speed alone explains (hull, engine or trade).
2022→2023	−1.0 kn	−14%	−19%	+11%	−8%	1.0 kn slower, fuel per mile down 14%; in line with the speed change.
2021→2022	+0.5 kn	−4%	−1%	−26%	−24%	0.5 kn faster, fuel per mile down 4%; better than speed alone explains (hull, engine or trade).
2020→2021	+0.3 kn	+5%	+7%	+18%	+13%	Same speed, fuel per mile up 5%; in line with the speed change.
2019→2020	−0.6 kn	−5%	−9%	−2%	+7%	0.6 kn slower, fuel per mile down 5%; in line with the speed change.
2018→2019	−0.5 kn	+3%	−0%	+21%	+6%	0.5 kn slower, fuel per mile up 3%; worse than speed alone explains (fouling, weather, loading 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	4,973	15,494	24,381	1,469	16.6	204	10.0	100%
2024	Maersk Line Ltd-USA	19,037	59,291	84,962	4,741	17.9	224	11.1	100%
2023	not published	10,622	33,085	58,115	3,693	15.7	183	9.27	99%
2022	not published	11,191	34,860	52,453	3,147	16.7	213	10.1	99%
2021	not published	15,798	48,453	71,218	4,383	16.2	222	13.2	–
2020	not published	12,738	39,693	60,237	3,791	15.9	212	11.7	100%
2019	not published	13,724	42,779	61,476	3,736	16.5	223	10.9	100%
2018	not published	11,011	34,312	50,949	2,994	17.0	216	10.3	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	10.0	16.3	−38%	574 of 2,208	ABS	C
2024	Maersk Line Ltd-USA	11.1	17.5	−37%	533 of 1,974	ABS	C
2023	not published	9.27	19.4	−52%	332 of 1,899	ABS	C
2022	not published	10.1	19.1	−47%	325 of 1,825	ABS	C
2021	not published	13.2	17.9	−26%	566 of 1,781	ABS	C
2020	not published	11.7	17.6	−33%	491 of 1,797	ABS	C
2019	not published	10.9	18.9	−42%	393 of 1,788	ABS	C
2018	not published	10.3	20.2	−49%	281 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.