Navalyze · General cargo · Ship

OKIANA

IMO: 9253868
Type: General cargo ship
Flag (estimated): Isle of Man
Port of registry: Douglas
Technical efficiency: EEXI 6.15 g CO₂/t·nm
Fuel (estimated): Oil blended with biofuel or another alternative fuel

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

Report year

2020 at a glance

From the 2020 THETIS-MRV report.

Fuel kg/nm

100

General cargo median 55.1 kg/nm (+82%)

CO₂ per transport work (dwt)

14.0

g CO₂/dwt·nm · General cargo median 24.5 (−43%)

Average speed

13.0 kn

General cargo median 10.7 kn (+21%)

Fuel per day at sea

31.4 t/day

Fuel consumed

2,953 t

CO₂ emitted

9,336 t

Distance sailed

29,407 nm

CO₂ ÷ CO₂ per mile

Time at sea

2,257 h

94 days, 26% 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 82.2 kg/nm · median 35.2 (+134%)

17.4Ranks 2,511 of 2,723, lowest first78.8

Average speedThis ship 11.8 kn · median 9.3 (+27%)

6.9Faster than 88% of general cargo ships12.0

CO₂ per transport work (dwt)This ship 141 g CO₂/dwt·nm · median 25.5 (+453%)

10.2Ranks 2,649 of 2,723, lowest first52.7

Middle 80% of shipsMiddle 50%General cargo 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 ports11%
From the EU50%
Into the EU36%
At berth in the EU3%

Fuel burned laden

–

Not reported

CO₂ at berth

295 t

3.2% 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

OKIANA
General cargo median

20.040.060.080.0100.0120.0

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

Average speed, kn

OKIANA
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

OKIANA
General cargo median

0.050.0100150

’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	+1.4 kn	+2%	+16%	−40%	+2,046%	1.4 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2023→2024	+0.5 kn	−20%	−16%	+229%	−45%	0.5 kn faster, fuel per mile down 20%; better than speed alone explains (hull, engine or trade).
2022→2023	−1.5 kn	−12%	−23%	−32%	+20%	1.5 kn slower, fuel per mile down 12%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	−1.0 kn	+9%	+0%	−74%	−6%	1.0 kn slower, fuel per mile up 9%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	−0.6 kn	+4%	−2%	−3%	−24%	0.6 kn slower, fuel per mile up 4%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	+2.0 kn	+5%	+24%	−3%	+40%	2.0 kn faster, fuel per mile up 5%; better than speed alone explains (hull, engine or trade).
2018→2019	−1.0 kn	−10%	−17%	+72%	−51%	1.0 kn slower, fuel per mile down 10%; 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
2025Bio blend	Westfal-Larsen Management	816	2,521	9,922	842	11.8	82.2	–	–
2024	Westfal-Larsen Management AS	1,333	4,188	16,494	1,593	10.4	80.8	–	–
2023	not published	504	1,590	5,010	508	9.9	101	–	–
2022	not published	835	2,632	7,343	647	11.4	114	–	–
2021	not published	2,955	9,241	28,415	2,294	12.4	104	–	–
2020	not published	2,953	9,336	29,407	2,257	13.0	100	–	–
2019	not published	2,890	9,010	30,197	2,742	11.0	95.7	–	–
2018	not published	1,861	5,820	17,558	1,466	12.0	106	–	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/dwt·nm	General cargo median	vs General cargo	Rank	Verifier	Methods
2025Bio blend	Westfal-Larsen Management	141	25.5	+453%	2,649 of 2,723	DNV	B+C
2024	Westfal-Larsen Management AS	6.57	19.3	−66%	63 of 1,111	DNV	B
2023	not published	11.9	20.7	−42%	245 of 1,045	DNV	B
2022	not published	9.99	21.6	−54%	133 of 1,034	DNV	B
2021	not published	10.7	22.7	−53%	112 of 1,142	DNV	B
2020	not published	14.0	24.5	−43%	165 of 1,167	DNV	B
2019	not published	9.96	25.0	−60%	87 of 1,154	DNV	B
2018	not published	20.5	24.9	−18%	360 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.