Navalyze · Container · Ship

KARLSKRONA

IMO: 9085558
Type: Container ship
Average cargo carried: 49,228 t
Flag (estimated): Liberia
Port of registry: Monrovia
Technical efficiency: EEXI 11.30 g CO₂/t·nm
Former names: MAERSK KARLSKRONA

ISM company (DoC holder) in 2024: Selden Marine Co

Report year

2021 at a glance

From the 2021 THETIS-MRV report. Carries about 54,946 t of cargo on average.

Fuel kg/nm

279

Container median 186 kg/nm (+50%)

CO₂ per transport work (cargo)

15.9

g CO₂/t·nm · Container median 17.9 (−11%)

Average speed

17.4 kn

Container median 14.1 kn (+23%)

Fuel per day at sea

116.5 t/day

Fuel consumed

16,292 t

CO₂ emitted

50,888 t

Distance sailed

58,432 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,356 h

140 days, 38% of the year

Within the container fleet, 2024

Set against all 1,974 container ships with a full-year 2024 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 229 kg/nm · median 167 (+37%)

78.9Ranks 1,330 of 1,974, lowest first302

Average speedThis ship 14.4 kn · median 13.5 (+7%)

9.6Faster than 65% of container ships16.1

CO₂ per transport work (cargo)This ship 14.5 g CO₂/t·nm · median 17.5 (−17%)

7.33Ranks 790 of 1,974, lowest first51.6

Middle 80% of shipsMiddle 50%Container medianThis ship

Where the emissions happen, 2021

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 ports24%
From the EU37%
Into the EU32%
At berth in the EU8%

Fuel burned laden

–

Not reported

CO₂ at berth

3,837 t

7.5% 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

KARLSKRONA
Container median

150.0200.0250.0300.0

’192019’202020’212021’222022’232023’242024

Average speed, kn

KARLSKRONA
Container median

12.014.016.018.0

’192019’202020’212021’222022’232023’242024

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

KARLSKRONA
Container median

12.014.016.018.020.0

’192019’202020’212021’222022’232023’242024

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2023→2024	−0.1 kn	−4%	−5%	+9%	+19%	Same speed, fuel per mile down 4%; in line with the speed change.
2022→2023	−1.1 kn	−4%	−11%	−29%	−9%	1.1 kn slower, fuel per mile down 4%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	−1.8 kn	−11%	−20%	−42%	−16%	1.8 kn slower, fuel per mile down 11%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+1.7 kn	+3%	+15%	+109%	+3%	1.7 kn faster, fuel per mile up 3%; better than speed alone explains (hull, engine or trade).
2019→2020	+0.1 kn	−3%	−2%	+33%	+5%	Same speed, fuel per mile down 3%; 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
2024	Selden Marine Co	6,033	18,840	26,394	1,834	14.4	229	14.5	98%
2023	not published	5,744	17,915	24,162	1,665	14.5	238	12.2	–
2022	not published	8,449	26,425	34,026	2,185	15.6	248	13.4	–
2021	not published	16,292	50,888	58,432	3,356	17.4	279	15.9	–
2020	not published	7,534	23,625	27,966	1,780	15.7	269	15.4	–
2019	not published	5,834	18,197	21,040	1,347	15.6	277	14.6	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Container median	vs Container	Rank	Verifier	Methods
2024	Selden Marine Co	14.5	17.5	−17%	790 of 1,974	ABS	B
2023	not published	12.2	19.4	−37%	547 of 1,899	Lloyd's Register	B
2022	not published	13.4	19.1	−30%	584 of 1,825	Lloyd's Register	B
2021	not published	15.9	17.9	−11%	766 of 1,781	Lloyd's Register	B
2020	not published	15.4	17.6	−12%	758 of 1,797	Lloyd's Register	B
2019	not published	14.6	18.9	−23%	619 of 1,788	Lloyd's Register	B

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.