Navalyze · General cargo · Ship

ONEGO DUERO

IMO: 9580780
Type: General cargo ship
Flag (estimated): Netherlands
Port of registry: Rotterdam
Technical efficiency: EEXI 10.00 g CO₂/t·nm
Ice class: IA
Former names: ANTONIA

ISM company (DoC holder) in 2025: Onego Duero CV

Report year

2025 at a glance

From the 2025 THETIS-MRV report.

Fuel kg/nm

44.0

General cargo median 35.2 kg/nm (+25%)

CO₂ per transport work (dwt)

24.8

g CO₂/dwt·nm · General cargo median 25.5 (−3%)

Average speed

10.6 kn

General cargo median 9.3 kn (+14%)

Fuel per day at sea

11.1 t/day

Fuel consumed

1,489 t

CO₂ emitted

4,744 t

4,817 t CO₂eq incl. CH₄ and N₂O

Distance sailed

33,877 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,208 h

134 days, 37% of the year

Within the general cargo fleet, 2025

Set against all 2,723 general cargo 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 44.0 kg/nm · median 35.2 (+25%)

17.4Ranks 1,726 of 2,723, lowest first78.8

Average speedThis ship 10.6 kn · median 9.3 (+14%)

6.9Faster than 73% of general cargo ships12.0

CO₂ per transport work (dwt)This ship 24.8 g CO₂/dwt·nm · median 25.5 (−3%)

10.2Ranks 1,285 of 2,723, lowest first52.7

Middle 80% of shipsMiddle 50%General cargo 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 ports10%
From the EU45%
Into the EU43%
At berth in the EU2%

56% of this ship's CO₂ falls under the EU ETS (2,651 t).

Fuel burned laden

–

Not reported

CO₂ at berth

107 t

2.3% of the ship's CO₂, alongside in EU ports

Methane (CH₄)

0.1 t

Mainly from LNG; small for oil, biofuel and methanol

CO₂eq uplift

+73 t

+1.5% CO₂eq on top of CO₂ alone, from CH₄ and N₂O; counted in full from 2026

Over the years

Full-year reports only. The General cargo median is the middle ship of all general cargo ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.

Fuel kg/nm

ONEGO DUERO
General cargo median

30.040.050.060.0

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

Average speed, kn

ONEGO DUERO
General cargo median

9.010.011.012.0

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

CO₂ per transport work (dwt), g CO₂/dwt·nm

ONEGO DUERO
General cargo median

15.020.025.030.035.0

’192019’212021’222022’232023’242024’252025

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	+13%	+21%	−6%	+64%	0.7 kn faster, fuel per mile up 13%; in line with the speed change.
2023→2024	−0.6 kn	−7%	−12%	+5%	−8%	0.6 kn slower, fuel per mile down 7%; in line with the speed change.
2022→2023	−0.4 kn	−0%	−5%	+7%	−24%	0.4 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	−0.5 kn	−3%	−7%	+39%	+23%	0.5 kn slower, fuel per mile down 3%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+1.1 kn	+1%	+10%	−49%	–	1.1 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2019→2020	−0.3 kn	+0%	−3%	+7%	–	Same speed, fuel per mile flat; 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	Onego Duero CV	1,489	4,744	33,877	3,208	10.6	44.0	–	–
2024	TAS Transatlantische Schifffahrts GmbH & Co. KG	1,405	4,444	36,154	3,656	9.9	38.9	–	–
2023	not published	1,447	4,548	34,556	3,294	10.5	41.9	–	–
2022	not published	1,362	4,315	32,323	2,971	10.9	42.1	29.2	–
2021	not published	1,003	3,181	23,177	2,039	11.4	43.3	–	–
2020	not published	1,947	6,112	45,283	4,384	10.3	43.0	2.06	92%
2019	not published	1,821	5,748	42,362	3,985	10.6	43.0	31.2	69%

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/dwt·nm	General cargo median	vs General cargo	Rank	Verifier	Methods
2025	Onego Duero CV	24.8	25.5	−3%	1,285 of 2,723	RINA	A
2024	TAS Transatlantische Schifffahrts GmbH & Co. KG	15.1	19.3	−21%	412 of 1,111	RINA	–
2023	not published	16.5	20.7	−20%	366 of 1,045	Dromon Bureau of Shipping	A
2022	not published	21.8	21.6	+1%	527 of 1,034	Dromon Bureau of Shipping	A
2021	not published	17.8	22.7	−22%	330 of 1,142	RINA	A
2020	not published	–	–	–	–	RINA	A+B+C
2019	not published	31.2	25.0	+25%	784 of 1,154	RINA	A+B

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. General cargo ships are benchmarked on CO₂ per transport work (dwt) (TW), in g CO₂/dwt·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 general cargo 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.