Navalyze · Container · Ship

MAERSK MONTANA

IMO: 9305312
Type: Container ship
Average cargo carried: 32,668 t
Flag (estimated): United States
Port of registry: Norfolk
Technical efficiency: EEXI 13.10 g CO₂/t·nm
Fuel (estimated): Oil blended with biofuel or another alternative fuel

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

Report year

2023 at a glance

From the 2023 THETIS-MRV report. Carries about 36,845 t of cargo on average.

Fuel kg/nm

150

Container median 165 kg/nm (−9%)

CO₂ per transport work (cargo)

12.7

g CO₂/t·nm · Container median 19.4 (−35%)

Average speed

14.2 kn

Container median 13.2 kn (+8%)

Fuel per day at sea

51.0 t/day

Fuel consumed

10,261 t

CO₂ emitted

31,964 t

Distance sailed

68,416 nm

CO₂ ÷ CO₂ per mile

Time at sea

4,829 h

201 days, 55% 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 188 kg/nm · median 177 (+6%)

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

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 17.7 g CO₂/t·nm · median 16.3 (+9%)

7.22Ranks 1,199 of 2,208, lowest first46.9

Middle 80% of shipsMiddle 50%Container medianThis ship

Where the emissions happen, 2023

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 ports7%
From the EU54%
Into the EU36%
At berth in the EU3%

Fuel burned laden

9,892 t

96% of all fuel; 4% in ballast or unladen

CO₂ at berth

831 t

2.6% 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 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	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	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	Hours at seah	Average speedknots at sea	Fuel kg/nmthis ship	CO₂ per transport work (cargo)g/t·nm, this ship	Laden fuel
2025Bio blend	Maersk Line, Limited-USA	13,255	40,786	70,578	4,633	15.2	188	17.7	98%
2024Bio blend	Maersk Line, Limited-USA	12,271	37,859	67,833	4,716	14.4	181	14.6	95%
2023	not published	10,261	31,964	68,416	4,829	14.2	150	12.7	96%
2022	not published	13,383	41,688	73,696	5,165	14.3	182	14.2	98%
2021	not published	12,905	40,195	63,080	4,013	15.7	205	16.9	–
2020	not published	15,055	46,896	68,751	4,739	14.5	219	19.2	100%
2019	not published	18,602	58,013	85,380	4,932	17.3	218	19.0	100%
2018	not published	17,786	55,567	78,726	4,479	17.6	226	17.9	100%

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Container median	vs Container	Rank	Verifier	Methods
2025Bio blend	Maersk Line, Limited-USA	17.7	16.3	+9%	1,199 of 2,208	ABS	C
2024Bio blend	Maersk Line, Limited-USA	14.6	17.5	−17%	796 of 1,974	ABS	C
2023	not published	12.7	19.4	−35%	583 of 1,899	ABS	C
2022	not published	14.2	19.1	−26%	639 of 1,825	ABS	C
2021	not published	16.9	17.9	−5%	837 of 1,781	ABS	C
2020	not published	19.2	17.6	+9%	983 of 1,797	ABS	C
2019	not published	19.0	18.9	+1%	908 of 1,788	ABS	C
2018	not published	17.9	20.2	−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.