Navalyze · Container · Ship

MAERSK MONTANA

IMO: 9305312
Type: Container ship
Average cargo carried: 32,668 t
Port of registry: Norfolk
Technical efficiency: EEXI 13.10 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 32,668 t of cargo on average.

Fuel per mile

187.8 kg/nm

Container median 177.0 kg/nm (+6%)

CO₂ per transport work (cargo)

17.69

g CO₂/t·nm · Container median 16.30 (+9%)

Average speed

15.2 kn

Container median 13.3 kn (+14%)

Fuel per day at sea

68.7 t/day

Fuel consumed

13,255 t

CO₂ emitted

40,786 t

41,437 t CO₂eq incl. CH₄ and N₂O

Distance sailed

70,578 nm

CO₂ ÷ CO₂ per mile

Time at sea

4,633 h

193 days, 53% 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 187.8 kg/nm · median 177.0 (+6%)

78.8Ranks 1,192 of 2,208, lowest first302.4

Average speedThis ship 15.2 kn · median 13.3 (+14%)

9.1Faster than 80% of container ships16.0

CO₂ per transport work (cargo)This ship 17.69 g CO₂/t·nm · median 16.30 (+9%)

7.22Ranks 1,199 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 ports6%
From the EU49%
Into the EU43%
At berth in the EU2%

48% of this ship's CO₂ falls under the EU ETS (19,497 t).

Fuel burned laden

98%

2% in ballast or unladen

CO₂ at berth

2.2%

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 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 MONTANA
Container median

140.0160.0180.0200.0220.0240.0

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

Average speed, kn

MAERSK MONTANA
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 MONTANA
Container median

12.014.016.018.020.022.0

’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	+0.8 kn	+4%	+10%	+4%	+21%	0.8 kn faster, fuel per mile up 4%; better than speed alone explains (hull, engine or trade).
2023→2024	+0.2 kn	+21%	+22%	−1%	+15%	Same speed, fuel per mile up 21%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	−0.1 kn	−17%	−18%	−7%	−11%	Same speed, fuel per mile down 17%; better than speed alone explains (hull, engine or trade).
2021→2022	−1.4 kn	−11%	−19%	+17%	−16%	1.4 kn slower, fuel per mile down 11%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+1.2 kn	−7%	+1%	−8%	−12%	1.2 kn faster, fuel per mile down 7%; better than speed alone explains (hull, engine or trade).
2019→2020	−2.8 kn	+1%	−16%	−19%	+1%	2.8 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	−0.3 kn	−4%	−5%	+8%	+6%	0.3 kn slower, fuel per mile down 4%; 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	At sea h	Speed kn	Fuel kg/nm	CO₂ g/t·nm	Laden fuel
2025	Maersk Line, Limited-USA	13,255	40,786	70,578	4,633	15.2	187.8	17.69	98%
2024	Maersk Line, Limited-USA	12,271	37,859	67,833	4,716	14.4	180.9	14.58	95%
2023	not published	10,261	31,964	68,416	4,829	14.2	150.0	12.68	96%
2022	not published	13,383	41,688	73,696	5,165	14.3	181.6	14.18	98%
2021	not published	12,905	40,195	63,080	4,013	15.7	204.6	16.93	–
2020	not published	15,055	46,896	68,751	4,739	14.5	219.0	19.19	100%
2019	not published	18,602	58,013	85,380	4,932	17.3	217.9	19.04	100%
2018	not published	17,786	55,567	78,726	4,479	17.6	225.9	17.91	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	17.69	16.30	+9%	1,199 of 2,208	ABS	C
2024	Maersk Line, Limited-USA	14.58	17.52	−17%	796 of 1,974	ABS	C
2023	not published	12.68	19.40	−35%	583 of 1,899	ABS	C
2022	not published	14.18	19.13	−26%	639 of 1,825	ABS	C
2021	not published	16.93	17.90	−5%	837 of 1,781	ABS	C
2020	not published	19.19	17.58	+9%	983 of 1,797	ABS	C
2019	not published	19.04	18.88	+1%	908 of 1,788	ABS	C
2018	not published	17.91	20.22	−11%	718 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.