Navalyze · Oil tanker · Ship

YASA SOUTHERN CROSS

IMO: 9534030
Type: Oil tanker
Average cargo carried: 187,392 t
Flag (estimated): Marshall Islands
Port of registry: Majuro
Technical efficiency: EIV 2.69 g CO₂/t·nm

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

Report year

2023 at a glance

From the 2023 THETIS-MRV report. Carries about 148,397 t of cargo on average.

Fuel kg/nm

228

Oil tanker median 129 kg/nm (+76%)

CO₂ per transport work (cargo)

4.79

g CO₂/t·nm · Oil tanker median 8.44 (−43%)

Average speed

11.6 kn

Oil tanker median 11.0 kn (+5%)

Fuel per day at sea

63.6 t/day

Fuel consumed

9,866 t

CO₂ emitted

30,823 t

Distance sailed

43,363 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,722 h

155 days, 42% 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 kg/nmThis ship 245 kg/nm · median 129 (+91%)

76.1Ranks 1,620 of 1,665, lowest first191

Average speedThis ship 10.0 kn · median 10.7 (−7%)

8.0Faster than 31% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 4.08 g CO₂/t·nm · median 7.95 (−49%)

4.51Ranks 98 of 1,665, lowest first27.7

Middle 80% of shipsMiddle 50%Oil tanker 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 ports2%
From the EU33%
Into the EU58%
At berth in the EU7%

Fuel burned laden

–

Not reported

CO₂ at berth

2,232 t

7.2% 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 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 kg/nm

YASA SOUTHERN CROSS
Oil tanker median

100.0150.0200.0250.0

’232023’242024’252025

Average speed, kn

YASA SOUTHERN CROSS
Oil tanker median

10.010.511.011.512.0

’232023’242024’252025

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

YASA SOUTHERN CROSS
Oil tanker median

4.06.08.010.0

’232023’252025

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	−0.8 kn	−2%	−8%	−78%	–	0.8 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	−0.8 kn	+9%	+1%	−24%	–	0.8 kn slower, fuel per mile up 9%; 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	YASA TANKER ISLETMECILIGI A.S.	1,773	5,534	7,239	721	10.0	245	4.08	–
2024	YASA TANKER ISLETMECILIGI A.S.	8,167	25,503	32,804	3,044	10.8	249	–	–
2023	not published	9,866	30,823	43,363	3,722	11.6	228	4.79	–

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.	4.08	7.95	−49%	98 of 1,665	ClassNK	C
2024	YASA TANKER ISLETMECILIGI A.S.	–	–	–	–	ClassNK	A+C
2023	not published	4.79	8.44	−43%	183 of 1,797	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.