Navalyze · Container · Ship

MAERSK BROWNSVILLE

IMO: 9313955
Type: Container ship
Average cargo carried: 30,761 t
Flag (estimated): Denmark
Port of registry: Kobenhavn
Technical efficiency: EEXI 13.30 g CO₂/t·nm
Former names: SEAGO PIRAEUS

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

Report year

2018 at a glance

From the 2018 THETIS-MRV report. Carries about 27,782 t of cargo on average.

Fuel kg/nm

181

Container median 182 kg/nm (−0%)

CO₂ per transport work (cargo)

20.3

g CO₂/t·nm · Container median 20.2 (+1%)

Average speed

16.1 kn

Container median 13.8 kn (+17%)

Fuel per day at sea

69.8 t/day

Fuel consumed

15,995 t

CO₂ emitted

49,950 t

Distance sailed

88,393 nm

CO₂ ÷ CO₂ per mile

Time at sea

5,497 h

229 days, 63% 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 191 kg/nm · median 177 (+8%)

78.8Ranks 1,214 of 2,208, lowest first302

Average speedThis ship 12.7 kn · median 13.3 (−5%)

9.1Faster than 41% of container ships16.0

CO₂ per transport work (cargo)This ship 19.4 g CO₂/t·nm · median 16.3 (+19%)

7.22Ranks 1,314 of 2,208, lowest first46.9

Middle 80% of shipsMiddle 50%Container medianThis ship

Where the emissions happen, 2018

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 ports52%
From the EU2%
Into the EU43%
At berth in the EU2%

Fuel burned laden

15,995 t

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

CO₂ at berth

1,214 t

2.4% 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 BROWNSVILLE
Container median

140.0160.0180.0200.0220.0

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

Average speed, kn

MAERSK BROWNSVILLE
Container median

10.012.014.016.018.0

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

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

MAERSK BROWNSVILLE
Container median

10.020.030.040.0

’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	−0.7 kn	+10%	+5%	+12%	−6%	0.7 kn slower, fuel per mile up 10%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	+1.4 kn	+16%	+31%	−13%	+1%	1.4 kn faster, fuel per mile up 16%; better than speed alone explains (hull, engine or trade).
2022→2023	−2.0 kn	−25%	−36%	+146%	−37%	2.0 kn slower, fuel per mile down 25%; in line with the speed change.
2021→2022	+2.9 kn	−1%	+25%	−28%	+2%	2.9 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2020→2021	−3.2 kn	+7%	−17%	−66%	+77%	3.2 kn slower, fuel per mile up 7%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	+0.1 kn	−1%	−0%	+6%	−53%	Same speed, fuel per mile flat.
2018→2019	−1.9 kn	+6%	−7%	−13%	+88%	1.9 kn slower, fuel per mile up 6%; worse than speed alone explains (fouling, weather, loading 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	8,924	27,914	46,801	3,671	12.7	191	19.4	100%
2024Bio blend	Maersk A/S	7,221	22,229	41,779	3,109	13.4	173	20.7	97%
2023	not published	7,140	22,239	48,099	4,025	12.0	148	20.6	98%
2022	not published	3,896	12,435	19,583	1,400	14.0	199	32.5	83%
2021	not published	5,459	17,005	27,198	2,444	11.1	201	32.0	–
2020	not published	15,267	45,800	81,011	5,658	14.3	188	18.0	100%
2019	not published	14,655	45,661	76,675	5,402	14.2	191	38.2	100%
2018	not published	15,995	49,950	88,393	5,497	16.1	181	20.3	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	19.4	16.3	+19%	1,314 of 2,208	ABS	C
2024Bio blend	Maersk A/S	20.7	17.5	+18%	1,165 of 1,974	ABS	C
2023	not published	20.6	19.4	+6%	1,014 of 1,899	ABS	C
2022	not published	32.5	19.1	+70%	1,349 of 1,825	ABS	C
2021	not published	32.0	17.9	+78%	1,346 of 1,781	ABS	C
2020	not published	18.0	17.6	+3%	927 of 1,797	ABS	C
2019	not published	38.2	18.9	+102%	1,389 of 1,788	ABS	C
2018	not published	20.3	20.2	+1%	858 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.