Navalyze · Container · Ship

MAERSK MONTE ALTO

IMO: 9283227
Type: Container ship
Average cargo carried: 37,677 t
Flag (estimated): Singapore
Port of registry: Singapore
Technical efficiency: EEXI 12.90 g CO₂/t·nm
Former names: MONTE SARMIENTO

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

Report year

2020 at a glance

From the 2020 THETIS-MRV report.

Fuel kg/nm

197

CO₂ per transport work (cargo)

–

g CO₂/t·nm

Average speed

11.0 kn

Fuel per day at sea

52.0 t/day

Fuel consumed

1,476 t

CO₂ emitted

4,602 t

Distance sailed

7,478 nm

CO₂ ÷ CO₂ per mile

Time at sea

682 h

28 days, 8% 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 14.7 kn · median 13.3 (+11%)

9.1Faster than 72% of container ships16.0

CO₂ per transport work (cargo)This ship 15.5 g CO₂/t·nm · median 16.3 (−5%)

7.22Ranks 1,049 of 2,208, lowest first46.9

Middle 80% of shipsMiddle 50%Container medianThis ship

Where the emissions happen, 2020

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 ports9%
From the EU45%
Into the EU40%
At berth in the EU6%

Fuel burned laden

1,476 t

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

CO₂ at berth

294 t

6.4% 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 MONTE ALTO
Container median

170.0180.0190.0200.0

’202020’252025

Average speed, kn

MAERSK MONTE ALTO
Container median

11.012.013.014.015.0

’202020’252025

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2020→2025	+3.7 kn	−5%	+27%	+537%	–	3.7 kn faster, fuel per mile down 5%; 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 A/S	8,936	27,858	47,609	3,242	14.7	188	15.5	98%
2020	not published	1,476	4,602	7,478	682	11.0	197	–	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	15.5	16.3	−5%	1,049 of 2,208	ABS	C
2020	not published	–	–	–	–	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.