Navalyze · Container · Ship

MAERSK PUELO

IMO: 9306172
Type: Container ship
Average cargo carried: 37,726 t
Flag (estimated): Panama
Port of registry: Panama
Technical efficiency: EEXI 11.70 g CO₂/t·nm

ISM company (DoC holder) in 2025: SEOYANG SHIPPING CO., LTD.

Report year

2023 at a glance

From the 2023 THETIS-MRV report. Carries about 46,694 t of cargo on average.

Fuel kg/nm

239

Container median 165 kg/nm (+45%)

CO₂ per transport work (cargo)

16.0

g CO₂/t·nm · Container median 19.4 (−18%)

Average speed

15.1 kn

Container median 13.2 kn (+14%)

Fuel per day at sea

86.4 t/day

Fuel consumed

13,309 t

CO₂ emitted

41,443 t

Distance sailed

55,645 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,695 h

154 days, 42% 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 248 kg/nm · median 177 (+40%)

78.8Ranks 1,627 of 2,208, lowest first302

Average speedThis ship 14.6 kn · median 13.3 (+10%)

9.1Faster than 70% of container ships16.0

CO₂ per transport work (cargo)This ship 20.5 g CO₂/t·nm · median 16.3 (+26%)

7.22Ranks 1,367 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 ports30%
From the EU33%
Into the EU33%
At berth in the EU4%

Fuel burned laden

–

Not reported

CO₂ at berth

1,662 t

4.0% 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 PUELO
Container median

150.0200.0250.0300.0

’212021’222022’232023’242024’252025

Average speed, kn

MAERSK PUELO
Container median

12.013.014.015.016.017.0

’212021’222022’232023’242024’252025

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

MAERSK PUELO
Container median

12.014.016.018.020.022.0

’212021’222022’232023’252025

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	−9%	−14%	+2%	–	0.8 kn slower, fuel per mile down 9%; in line with the speed change.
2023→2024	+0.3 kn	+13%	+16%	+3%	–	0.3 kn faster, fuel per mile up 13%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	+2.3 kn	+10%	+29%	+30%	+18%	2.3 kn faster, fuel per mile up 10%; better than speed alone explains (hull, engine or trade).
2021→2022	−3.5 kn	−11%	−30%	−15%	−34%	3.5 kn slower, fuel per mile down 11%; worse than speed alone explains (fouling, weather, loading or trade).

Part-year reports are left out of these comparisons. 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
2025part-year	SEOYANG SHIPPING CO., LTD.	10,090	31,413	41,556	2,753	15.1	243	20.7	–
2025	Sunwick Shipping Co	14,525	45,366	58,631	4,027	14.6	248	20.5	29%
2024Bio blend	SEOYANG SHIPPING CO., LTD.	15,583	48,100	57,527	3,733	15.4	271	–	–
2023	not published	13,309	41,443	55,645	3,695	15.1	239	16.0	–
2022	not published	9,306	29,076	42,656	3,333	12.8	218	13.6	–
2021	not published	12,293	38,621	50,089	3,076	16.3	245	20.6	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Container median	vs Container	Rank	Verifier	Methods
2025part-year	SEOYANG SHIPPING CO., LTD.	–	–	–	–	ClassNK	A+C
2025	Sunwick Shipping Co	20.5	16.3	+26%	1,367 of 2,208	ABS	B
2024Bio blend	SEOYANG SHIPPING CO., LTD.	–	–	–	–	ClassNK	A+C
2023	not published	16.0	19.4	−18%	784 of 1,899	ClassNK	A+C
2022	not published	13.6	19.1	−29%	606 of 1,825	ClassNK	A+B+C
2021	not published	20.6	17.9	+15%	1,024 of 1,781	ClassNK	A+B+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.