Navalyze · Oil tanker · Ship

YASA GOLDEN BOSPHORUS

IMO: 9334038
Type: Oil tanker
Average cargo carried: 77,715 t
Port of registry: Majuro
Technical efficiency: EIV 4.61 g CO₂/t·nm

ISM company (DoC holder) in 2025: YASA TANKER ISLETMECILIGI A.S.

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 77,715 t of cargo on average.

Fuel per mile

162.6 kg/nm

Oil tanker median 128.5 kg/nm (+27%)

CO₂ per transport work (cargo)

6.55

g CO₂/t·nm · Oil tanker median 7.95 (−18%)

Average speed

10.5 kn

Oil tanker median 10.7 kn (−2%)

Fuel per day at sea

40.8 t/day

Fuel consumed

4,313 t

CO₂ emitted

13,499 t

13,711 t CO₂eq incl. CH₄ and N₂O

Distance sailed

26,519 nm

CO₂ ÷ CO₂ per mile

Time at sea

2,537 h

106 days, 29% of the year

Within the oil tanker fleet, 2025

Set against all 1,665 oil tanker 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 per mileThis ship 162.6 kg/nm · median 128.5 (+27%)

76.1Ranks 1,324 of 1,665, lowest first190.8

Average speedThis ship 10.5 kn · median 10.7 (−2%)

8.0Faster than 42% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 6.55 g CO₂/t·nm · median 7.95 (−18%)

4.51Ranks 549 of 1,665, lowest first27.66

Middle 80% of shipsMiddle 50%Oil tanker medianThis ship

Where the emissions happen, 2025

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 ports12%
From the EU54%
Into the EU28%
At berth in the EU6%

57% of this ship's CO₂ falls under the EU ETS (7,736 t).

Fuel burned laden

–

Not reported

CO₂ at berth

5.9%

Alongside in EU ports

Methane (CH₄)

0.2 t

Mainly from LNG; small for oil

CO₂eq ÷ CO₂

1.016

Uplift from CH₄ and N₂O, counted in full from 2026

Over the years

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

Fuel per mile, kg/nm

YASA GOLDEN BOSPHORUS
Oil tanker median

100.0150.0200.0250.0300.0

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

Average speed, kn

YASA GOLDEN BOSPHORUS
Oil tanker median

6.08.010.012.014.0

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

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

YASA GOLDEN BOSPHORUS
Oil tanker median

5.010.015.020.025.0

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

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2024→2025	−0.3 kn	+0%	−2%	+98%	–	0.3 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	−0.5 kn	+2%	−3%	−9%	–	0.5 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	+4.3 kn	−30%	+13%	−11%	−57%	4.3 kn faster, fuel per mile down 30%; better than speed alone explains (hull, engine or trade).
2021→2022	−1.6 kn	+23%	+1%	−33%	+123%	1.6 kn slower, fuel per mile up 23%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	−3.2 kn	+23%	−11%	−34%	+4%	3.2 kn slower, fuel per mile up 23%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	−0.7 kn	−45%	−49%	+369%	−12%	0.7 kn slower, fuel per mile down 45%; better than speed alone explains (hull, engine or trade).
2018→2019	+4.1 kn	+33%	+98%	−72%	−22%	4.1 kn faster, fuel per mile up 33%; 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	At sea h	Speed kn	Fuel kg/nm	CO₂ g/t·nm	Laden fuel
2025	YASA TANKER ISLETMECILIGI A.S.	4,313	13,499	26,519	2,537	10.5	162.6	6.55	–
2024	YASA TANKER ISLETMECILIGI A.S.	2,175	6,817	13,418	1,248	10.8	162.1	–	–
2023	not published	2,360	7,463	14,795	1,314	11.3	159.5	10.75	–
2022	not published	3,762	11,907	16,531	2,361	7.0	227.6	24.95	–
2021	not published	4,580	14,506	24,854	2,905	8.6	184.3	11.21	–
2020	not published	5,635	17,850	37,566	3,189	11.8	150.0	10.74	–
2019	not published	2,201	6,876	8,018	641	12.5	274.5	12.18	–
2018	not published	5,978	18,685	29,038	3,443	8.4	205.9	15.57	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	YASA TANKER ISLETMECILIGI A.S.	6.55	7.95	−18%	549 of 1,665	ClassNK	A+B
2024	YASA TANKER ISLETMECILIGI A.S.	–	–	–	–	ClassNK	A
2023	not published	10.75	8.44	+27%	1,195 of 1,797	ClassNK	A
2022	not published	24.95	8.51	+193%	1,765 of 1,961	ClassNK	A
2021	not published	11.21	8.86	+27%	1,177 of 1,789	ClassNK	A
2020	not published	10.74	9.03	+19%	1,146 of 1,870	ClassNK	A
2019	not published	12.18	8.83	+38%	1,347 of 1,919	ClassNK	A
2018	not published	15.57	8.86	+76%	1,418 of 1,779	ClassNK	A

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Oil tanker 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 oil tanker 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.