Navalyze · Container · Ship

CHARLESTON EXPRESS

IMO: 9665645
Type: Container ship
Average cargo carried: 123,659 t
Flag (estimated): Liberia
Port of registry: Monrovia
Technical efficiency: EEXI 6.53 g CO₂/t·nm
Former names: THALASSA NIKI

ISM company (DoC holder) in 2025: Thalassa Niki GmbH & Co. KG

Report year

2020 at a glance

From the 2020 THETIS-MRV report. Carries about 111,387 t of cargo on average.

Fuel kg/nm

298

Container median 172 kg/nm (+73%)

CO₂ per transport work (cargo)

8.43

g CO₂/t·nm · Container median 17.6 (−52%)

Average speed

17.5 kn

Container median 14.0 kn (+25%)

Fuel per day at sea

124.8 t/day

Fuel consumed

23,772 t

CO₂ emitted

75,036 t

Distance sailed

79,911 nm

CO₂ ÷ CO₂ per mile

Time at sea

4,573 h

191 days, 52% 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 254 kg/nm · median 177 (+43%)

78.8Ranks 1,687 of 2,208, lowest first302

Average speedThis ship 14.9 kn · median 13.3 (+12%)

9.1Faster than 75% of container ships16.0

CO₂ per transport work (cargo)This ship 6.40 g CO₂/t·nm · median 16.3 (−61%)

7.22Ranks 106 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 EU44%
Into the EU42%
At berth in the EU5%

Fuel burned laden

–

Not reported

CO₂ at berth

3,774 t

5.0% 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

CHARLESTON EXPRESS
Container median

150.0200.0250.0300.0350.0

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

Average speed, kn

CHARLESTON EXPRESS
Container median

12.014.016.018.0

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

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

CHARLESTON EXPRESS
Container median

5.010.015.020.025.0

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

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	−0.6 kn	+7%	+3%	+42%	−19%	0.6 kn slower, fuel per mile up 7%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2024	−0.8 kn	−18%	−22%	−54%	−8%	0.8 kn slower, fuel per mile down 18%; better than speed alone explains (hull, engine or trade).
2021→2022	−0.8 kn	−11%	−15%	−12%	−5%	0.8 kn slower, fuel per mile down 11%; in line with the speed change.
2020→2021	−0.4 kn	+9%	+7%	−24%	+8%	0.4 kn slower, fuel per mile up 9%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	+1.1 kn	+7%	+14%	+20%	+2%	1.1 kn faster, fuel per mile up 7%; better than speed alone explains (hull, engine or trade).
2018→2019	+0.3 kn	−2%	+0%	+12%	+5%	Same speed, fuel per mile flat; 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	Thalassa Niki GmbH & Co. KG	8,870	27,662	34,952	2,349	14.9	254	6.40	–
2024	Thalassa Niki GmbH & Co. KG	5,857	18,278	24,634	1,592	15.5	238	7.91	–
2022	not published	15,406	48,162	53,400	3,274	16.3	289	8.64	–
2021	not published	19,708	62,028	60,547	3,549	17.1	326	9.12	–
2020	not published	23,772	75,036	79,911	4,573	17.5	298	8.43	–
2019	not published	18,492	57,863	66,771	4,063	16.4	277	8.26	–
2018	not published	16,815	52,587	59,647	3,713	16.1	282	7.84	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Container median	vs Container	Rank	Verifier	Methods
2025	Thalassa Niki GmbH & Co. KG	6.40	16.3	−61%	106 of 2,208	DNV	B+C
2024	Thalassa Niki GmbH & Co. KG	7.91	17.5	−55%	257 of 1,974	DNV	B+C
2022	not published	8.64	19.1	−55%	239 of 1,825	DNV	B+C
2021	not published	9.12	17.9	−49%	255 of 1,781	DNV	B+C
2020	not published	8.43	17.6	−52%	259 of 1,797	DNV	A
2019	not published	8.26	18.9	−56%	211 of 1,788	DNV	A
2018	not published	7.84	20.2	−61%	124 of 1,705	DNV	A

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.