Navalyze · Container · Ship

MARIELYST

IMO: 9448669
Type: Container ship
Average cargo carried: 7,549 t
Flag (estimated): Portugal
Port of registry: Madeira
Technical efficiency: EEXI 21.20 g CO₂/t·nm
Ice class: IA

ISM company (DoC holder) in 2025: TB Marine Cont Shipmanagement GmbH & Co. KG

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 7,549 t of cargo on average.

Fuel kg/nm

74.0

Container median 177 kg/nm (−58%)

CO₂ per transport work (cargo)

30.8

g CO₂/t·nm · Container median 16.3 (+89%)

Average speed

10.5 kn

Container median 13.3 kn (−21%)

Fuel per day at sea

18.6 t/day

Fuel consumed

3,498 t

CO₂ emitted

10,983 t

11,155 t CO₂eq incl. CH₄ and N₂O

Distance sailed

47,286 nm

CO₂ ÷ CO₂ per mile

Time at sea

4,510 h

188 days, 51% 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 74.0 kg/nm · median 177 (−58%)

78.8Ranks 155 of 2,208, lowest first302

Average speedThis ship 10.5 kn · median 13.3 (−21%)

9.1Faster than 18% of container ships16.0

CO₂ per transport work (cargo)This ship 30.8 g CO₂/t·nm · median 16.3 (+89%)

7.22Ranks 1,705 of 2,208, lowest first46.9

Middle 80% of shipsMiddle 50%Container medianThis ship

Where the emissions happen, 2025

THETIS splits each ship's emissions 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 ports62%
From the EU22%
Into the EU8%
At berth in the EU7%

85% of this ship's CO₂ falls under the EU ETS (9,297 t).

Fuel burned laden

–

Not reported

CO₂ at berth

806 t

7.3% of the ship's CO₂, alongside in EU ports

Methane (CH₄)

0.2 t

Mainly from LNG; small for oil, biofuel and methanol

CO₂eq uplift

+172 t

+1.6% CO₂eq on top of CO₂ alone, from CH₄ and N₂O; counted in full from 2026

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

MARIELYST
Container median

50.0100.0150.0200.0

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

Average speed, kn

MARIELYST
Container median

8.010.012.014.016.0

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

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

MARIELYST
Container median

0.020.040.060.080.0

’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	−11%	−5%	−9%	−27%	0.7 kn faster, fuel per mile down 11%; better than speed alone explains (hull, engine or trade).
2023→2024	−1.4 kn	−5%	−17%	−10%	−7%	1.4 kn slower, fuel per mile down 5%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	−0.7 kn	−5%	−10%	−9%	−9%	0.7 kn slower, fuel per mile down 5%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	−0.3 kn	+8%	+6%	−24%	−35%	Same speed, fuel per mile up 8%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+1.5 kn	+3%	+17%	+17%	+31%	1.5 kn faster, fuel per mile up 3%; better than speed alone explains (hull, engine or trade).
2019→2020	−2.3 kn	−10%	−26%	+1%	+15%	2.3 kn slower, fuel per mile down 10%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	+1.0 kn	−22%	−16%	+95%	+4%	1.0 kn faster, fuel per mile down 22%; 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	TB Marine Cont Shipmanagement GmbH & Co. KG	3,498	10,983	47,286	4,510	10.5	74.0	30.8	–
2024	TB Marine Cont Shipmanagement GmbH & Co. KG	4,359	13,668	52,230	5,344	9.8	83.5	41.9	–
2023	not published	5,119	16,019	58,283	5,206	11.2	87.8	45.1	–
2022	not published	5,931	18,543	64,270	5,422	11.9	92.3	49.6	90%
2021	not published	7,168	22,357	84,101	6,898	12.2	85.2	76.1	95%
2020	not published	5,905	18,431	71,584	6,694	10.7	82.5	58.1	–
2019	not published	6,470	20,235	70,610	5,433	13.0	91.6	50.6	–
2018	not published	4,253	13,302	36,173	3,003	12.0	118	48.9	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Container median	vs Container	Rank	Verifier	Methods
2025	TB Marine Cont Shipmanagement GmbH & Co. KG	30.8	16.3	+89%	1,705 of 2,208	DNV	B+C
2024	TB Marine Cont Shipmanagement GmbH & Co. KG	41.9	17.5	+139%	1,644 of 1,974	DNV	A+C
2023	not published	45.1	19.4	+132%	1,622 of 1,899	DNV	A+C
2022	not published	49.6	19.1	+159%	1,606 of 1,825	ABS	A+B
2021	not published	76.1	17.9	+325%	1,747 of 1,781	ABS	A+B
2020	not published	58.1	17.6	+230%	1,671 of 1,797	ABS	A+B
2019	not published	50.6	18.9	+168%	1,559 of 1,788	ABS	A+B
2018	not published	48.9	20.2	+142%	1,465 of 1,705	ABS	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.