Navalyze · General cargo · Ship

DONAU

IMO: 9385908
Type: General cargo ship
Flag (estimated): Netherlands
Port of registry: Zwartsluis
Technical efficiency: EEXI 11.76 g CO₂/t·nm
Ice class: IA

ISM company (DoC holder) in 2025: Rederij Wanmar

Report year

2025 at a glance

From the 2025 THETIS-MRV report.

Fuel kg/nm

43.2

General cargo median 35.2 kg/nm (+23%)

CO₂ per transport work (dwt)

26.6

g CO₂/dwt·nm · General cargo median 25.5 (+4%)

Average speed

10.7 kn

General cargo median 9.3 kn (+15%)

Fuel per day at sea

11.1 t/day

Fuel consumed

1,748 t

CO₂ emitted

5,466 t

5,552 t CO₂eq incl. CH₄ and N₂O

Distance sailed

40,447 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,772 h

157 days, 43% 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 43.2 kg/nm · median 35.2 (+23%)

17.4Ranks 1,696 of 2,723, lowest first78.8

Average speedThis ship 10.7 kn · median 9.3 (+15%)

6.9Faster than 76% of general cargo ships12.0

CO₂ per transport work (dwt)This ship 26.6 g CO₂/dwt·nm · median 25.5 (+4%)

10.2Ranks 1,470 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 ports77%
From the EU16%
Into the EU3%
At berth in the EU4%

89% of this ship's CO₂ falls under the EU ETS (4,888 t).

Fuel burned laden

–

Not reported

CO₂ at berth

214 t

3.9% 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

+86 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 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

DONAU
General cargo median

30.040.050.060.0

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

Average speed, kn

DONAU
General cargo median

6.08.010.012.0

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

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

DONAU
General cargo median

15.020.025.030.035.040.0

’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	−1.0 kn	+3%	−6%	−23%	−9%	1.0 kn slower, fuel per mile up 3%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	−0.2 kn	+1%	+0%	−4%	+8%	Same speed, fuel per mile flat.
2022→2023	+1.2 kn	+0%	+11%	+16%	−9%	1.2 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2021→2022	+0.1 kn	−5%	−4%	−7%	+2%	Same speed, fuel per mile down 5%; better than speed alone explains (hull, engine or trade).
2020→2021	+2.0 kn	+2%	+25%	+3%	−21%	2.0 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2019→2020	−0.6 kn	+5%	−2%	−9%	+21%	0.6 kn slower, fuel per mile up 5%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	+1.7 kn	+2%	+27%	+19%	+8%	1.7 kn faster, 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	Rederij Wanmar	1,748	5,466	40,447	3,772	10.7	43.2	–	–
2024	Rederij Wanmar	2,209	6,899	52,808	4,504	11.7	41.8	–	–
2023	not published	2,272	7,095	55,085	4,630	11.9	41.2	–	–
2022	not published	1,950	6,089	47,572	4,429	10.7	41.0	–	–
2021	not published	2,209	6,898	51,137	4,815	10.6	43.2	–	–
2020	not published	2,105	6,604	49,710	5,749	8.6	42.4	–	–
2019	not published	2,221	6,977	54,917	5,939	9.2	40.5	–	–
2018	not published	1,846	5,813	46,315	6,202	7.5	39.9	–	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/dwt·nm	General cargo median	vs General cargo	Rank	Verifier	Methods
2025	Rederij Wanmar	26.6	25.5	+4%	1,470 of 2,723	DNV	C
2024	Rederij Wanmar	29.1	19.3	+51%	878 of 1,111	DNV	A
2023	not published	26.8	20.7	+30%	749 of 1,045	DNV	A
2022	not published	29.5	21.6	+37%	758 of 1,034	DNV	A
2021	not published	29.0	22.7	+28%	845 of 1,142	DNV	A
2020	not published	36.9	24.5	+50%	939 of 1,167	DNV	A
2019	not published	30.5	25.0	+22%	755 of 1,154	DNV	A
2018	not published	28.2	24.9	+13%	621 of 1,044	DNV	A

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.