Navalyze · Container · Ship

MARSTAL MAERSK

IMO: 9619971
Type: Container ship
Average cargo carried: 152,561 t
Flag (estimated): Denmark
Port of registry: Marstal
Technical efficiency: EEXI 6.79 g CO₂/t·nm

ISM company (DoC holder) in 2025: Maersk A/S · part of Maersk

Report year

2021 at a glance

From the 2021 THETIS-MRV report. Carries about 163,079 t of cargo on average.

Fuel kg/nm

345

Container median 186 kg/nm (+85%)

CO₂ per transport work (cargo)

6.58

g CO₂/t·nm · Container median 17.9 (−63%)

Average speed

16.3 kn

Container median 14.1 kn (+16%)

Fuel per day at sea

134.4 t/day

Fuel consumed

26,343 t

CO₂ emitted

82,048 t

Distance sailed

76,462 nm

CO₂ ÷ CO₂ per mile

Time at sea

4,705 h

196 days, 54% 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 312 kg/nm · median 177 (+76%)

78.8Ranks 2,027 of 2,208, lowest first302

Average speedThis ship 16.7 kn · median 13.3 (+26%)

9.1Faster than 96% of container ships16.0

CO₂ per transport work (cargo)This ship 6.36 g CO₂/t·nm · median 16.3 (−61%)

7.22Ranks 95 of 2,208, lowest first46.9

Middle 80% of shipsMiddle 50%Container medianThis ship

Where the emissions happen, 2021

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 ports16%
From the EU46%
Into the EU36%
At berth in the EU2%

Fuel burned laden

–

Not reported

CO₂ at berth

1,723 t

2.1% 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

MARSTAL MAERSK
Container median

150.0200.0250.0300.0350.0

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

Average speed, kn

MARSTAL MAERSK
Container median

13.014.015.016.017.0

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

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

MARSTAL MAERSK
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	+0.1 kn	−4%	−4%	−19%	+5%	Same speed, fuel per mile down 4%; better than speed alone explains (hull, engine or trade).
2023→2024	+2.1 kn	−5%	+9%	+40%	−12%	2.1 kn faster, fuel per mile down 5%; better than speed alone explains (hull, engine or trade).
2022→2023	+0.4 kn	−1%	+2%	−19%	−2%	0.4 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2021→2022	−2.2 kn	−0%	−13%	−8%	+7%	2.2 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	−0.3 kn	+7%	+5%	+51%	+7%	0.3 kn slower, fuel per mile up 7%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	−0.3 kn	+2%	+0%	−12%	+3%	Same speed, fuel per mile up 2%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	−0.1 kn	−5%	−6%	−17%	−12%	Same speed, fuel per mile down 5%; in line with the speed change.

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 A/S	20,066	62,498	64,412	3,855	16.7	312	6.36	99%
2024	Maersk A/S	25,790	80,310	79,570	4,780	16.6	324	6.05	99%
2023	not published	19,319	60,159	56,851	3,920	14.5	340	6.88	99%
2022	not published	24,101	75,056	70,131	4,964	14.1	344	7.05	98%
2021	not published	26,343	82,048	76,462	4,705	16.3	345	6.58	–
2020	not published	16,310	49,957	50,803	3,068	16.6	321	6.14	100%
2019	not published	18,079	56,300	57,708	3,415	16.9	313	5.94	100%
2018	not published	23,057	71,966	69,868	4,115	17.0	330	6.78	100%

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Container median	vs Container	Rank	Verifier	Methods
2025	Maersk A/S	6.36	16.3	−61%	95 of 2,208	ABS	C
2024	Maersk A/S	6.05	17.5	−65%	69 of 1,974	ABS	C
2023	not published	6.88	19.4	−65%	142 of 1,899	ABS	C
2022	not published	7.05	19.1	−63%	142 of 1,825	ABS	C
2021	not published	6.58	17.9	−63%	109 of 1,781	ABS	C
2020	not published	6.14	17.6	−65%	83 of 1,797	ABS	C
2019	not published	5.94	18.9	−69%	29 of 1,788	ABS	C
2018	not published	6.78	20.2	−66%	43 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.