Navalyze · General cargo · Ship

ISOLDANA

IMO: 9186235
Type: General cargo ship
Flag (estimated): Norway
Port of registry: Bergen
Technical efficiency: EEXI 6.41 g CO₂/t·nm
Ice class: IB

ISM company (DoC holder) in 2025: Westfal-Larsen Management AS

Report year

2021 at a glance

From the 2021 THETIS-MRV report.

Fuel kg/nm

112

General cargo median 55.9 kg/nm (+101%)

CO₂ per transport work (dwt)

12.7

g CO₂/dwt·nm · General cargo median 22.7 (−44%)

Average speed

12.1 kn

General cargo median 10.9 kn (+11%)

Fuel per day at sea

32.6 t/day

Fuel consumed

5,233 t

CO₂ emitted

16,389 t

Distance sailed

46,578 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,856 h

161 days, 44% 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 98.3 kg/nm · median 35.2 (+179%)

17.4Ranks 2,669 of 2,723, lowest first78.8

Average speedThis ship 10.9 kn · median 9.3 (+17%)

6.9Faster than 78% of general cargo ships12.0

CO₂ per transport work (dwt)This ship 12.0 g CO₂/dwt·nm · median 25.5 (−53%)

10.2Ranks 351 of 2,723, lowest first52.7

Middle 80% of shipsMiddle 50%General cargo 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 ports13%
From the EU37%
Into the EU44%
At berth in the EU6%

Fuel burned laden

–

Not reported

CO₂ at berth

1,019 t

6.2% 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 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

ISOLDANA
General cargo median

20.040.060.080.0100.0120.0

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

Average speed, kn

ISOLDANA
General cargo median

9.010.011.012.013.0

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

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

ISOLDANA
General cargo median

5.010.015.020.025.030.0

’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	−1.3 kn	+11%	−2%	−70%	−22%	1.3 kn slower, fuel per mile up 11%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	+1.3 kn	−10%	+0%	+119%	+100%	1.3 kn faster, fuel per mile down 10%; better than speed alone explains (hull, engine or trade).
2022→2023	−0.9 kn	−14%	−20%	+182%	−31%	0.9 kn slower, fuel per mile down 14%; in line with the speed change.
2021→2022	−0.3 kn	+2%	−0%	−88%	−13%	Same speed, fuel per mile up 2%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+0.1 kn	+17%	+19%	+182%	+1%	Same speed, fuel per mile up 17%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	+0.8 kn	−5%	+1%	−18%	−15%	0.8 kn faster, fuel per mile down 5%; better than speed alone explains (hull, engine or trade).
2018→2019	−0.6 kn	+0%	−5%	−58%	−14%	0.6 kn slower, 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	Westfal-Larsen Management AS	1,042	3,294	10,599	971	10.9	98.3	–	–
2024	Westfal-Larsen Management AS	3,110	9,733	35,072	2,864	12.2	88.7	–	–
2023	not published	1,584	4,961	16,000	1,464	10.9	99.0	–	–
2022	not published	651	2,048	5,674	481	11.8	115	–	–
2021	not published	5,233	16,389	46,578	3,856	12.1	112	–	–
2020	not published	1,580	4,947	16,489	1,377	12.0	95.8	–	–
2019	not published	2,017	6,295	20,045	1,784	11.2	101	–	–
2018	not published	4,832	15,092	48,112	4,086	11.8	100	–	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/dwt·nm	General cargo median	vs General cargo	Rank	Verifier	Methods
2025	Westfal-Larsen Management AS	12.0	25.5	−53%	351 of 2,723	DNV	B+C
2024	Westfal-Larsen Management AS	15.3	19.3	−20%	414 of 1,111	DNV	B
2023	not published	7.67	20.7	−63%	97 of 1,045	DNV	B
2022	not published	11.1	21.6	−48%	166 of 1,034	DNV	B
2021	not published	12.7	22.7	−44%	164 of 1,142	DNV	B
2020	not published	12.6	24.5	−49%	140 of 1,167	DNV	B
2019	not published	14.8	25.0	−41%	180 of 1,154	DNV	B
2018	not published	17.3	24.9	−31%	243 of 1,044	DNV	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.