Navalyze · Other · Ship

OYA STAR

IMO: 8122957
Type: Other ship types
Average cargo carried: 8,203 t
Port of registry: Panama
Technical efficiency: EEXI 11.16 g CO₂/t·nm

Report year

2023 at a glance

From the 2023 THETIS-MRV report. Carries about 8,203 t of cargo on average.

Fuel per mile

61.1 kg/nm

Other median 87.3 kg/nm (−30%)

CO₂ per transport work (cargo)

23.46

g CO₂/t·nm · Other median 93.54 (−75%)

Average speed

11.1 kn

Other median 11.8 kn (−6%)

Fuel per day at sea

16.3 t/day

Fuel consumed

2,641 t

CO₂ emitted

8,324 t

Distance sailed

43,255 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,897 h

162 days, 44% of the year

Within the other fleet, 2023

Set against all 116 other ships with a full-year 2023 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 per mileThis ship 61.1 kg/nm · median 87.3 (−30%)

45.7Ranks 26 of 116, lowest first149.1

Average speedThis ship 11.1 kn · median 11.8 (−6%)

8.4Faster than 41% of other ships16.0

CO₂ per transport work (cargo)This ship 23.46 g CO₂/t·nm · median 93.54 (−75%)

25.65Ranks 11 of 116, lowest first293.13

Middle 80% of shipsMiddle 50%Other medianThis ship

Where the emissions happen, 2023

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 ports0%
From the EU52%
Into the EU45%
At berth in the EU3%

Fuel burned laden

–

Not reported

CO₂ at berth

3.2%

Alongside in EU ports

Methane (CH₄)

–

Mainly from LNG; small for oil

CO₂eq ÷ CO₂

–

Uplift from CH₄ and N₂O, counted in full from 2026

Over the years

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

Fuel per mile, kg/nm

OYA STAR
Other median

60.070.080.090.0100.0

’182018’192019’222022’232023

Average speed, kn

OYA STAR
Other median

8.09.010.011.012.0

’182018’192019’222022’232023

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

OYA STAR
Other median

20.040.060.080.0100

’182018’192019’222022’232023

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2022→2023	+3.1 kn	−36%	−11%	+736%	−37%	3.1 kn faster, fuel per mile down 36%; better than speed alone explains (hull, engine or trade).
2019→2022	−0.3 kn	+24%	+19%	+79%	+31%	0.3 kn slower, fuel per mile up 24%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	−2.7 kn	+19%	−9%	−60%	−11%	2.7 kn slower, fuel per mile up 19%; 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	At sea h	Speed kn	Fuel kg/nm	CO₂ g/t·nm	Laden fuel
2023	not published	2,641	8,324	43,255	3,897	11.1	61.1	23.46	–
2022	not published	493	1,550	5,176	647	8.0	95.2	37.23	–
2019	not published	223	699	2,896	348	8.3	77.0	28.39	–
2018	not published	464	1,452	7,192	655	11.0	64.5	31.73	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Other median	vs Other	Rank	Verifier	Methods
2023	not published	23.46	93.54	−75%	11 of 116	Bureau Veritas	B
2022	not published	37.23	74.09	−50%	24 of 78	RINA	A
2019	not published	28.39	90.12	−68%	20 of 96	RINA	A
2018	not published	31.73	72.88	−56%	25 of 87	RINA	A

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Other 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 other 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.