Navalyze · Oil tanker · Ship

KLARA

IMO: 9405904
Type: Oil tanker
Average cargo carried: 37,747 t
Flag (estimated): Panama
Port of registry: Panama
Technical efficiency: EEXI 4.88 g CO₂/t·nm

ISM company (DoC holder) in 2025: World Tankers Management Pte

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 37,747 t of cargo on average.

Fuel kg/nm

87.4

Oil tanker median 129 kg/nm (−32%)

CO₂ per transport work (cargo)

7.28

g CO₂/t·nm · Oil tanker median 7.95 (−8%)

Average speed

12.3 kn

Oil tanker median 10.7 kn (+15%)

Fuel per day at sea

25.7 t/day

Fuel consumed

1,080 t

CO₂ emitted

3,395 t

3,448 t CO₂eq incl. CH₄ and N₂O

Distance sailed

12,355 nm

CO₂ ÷ CO₂ per mile

Time at sea

1,006 h

42 days, 11% 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 87.4 kg/nm · median 129 (−32%)

76.1Ranks 283 of 1,665, lowest first191

Average speedThis ship 12.3 kn · median 10.7 (+15%)

8.0Faster than 93% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 7.28 g CO₂/t·nm · median 7.95 (−8%)

4.51Ranks 703 of 1,665, lowest first27.7

Middle 80% of shipsMiddle 50%Oil tanker medianThis ship

Where the emissions happen, 2025

THETIS splits each ship's emissions 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 ports19%
From the EU32%
Into the EU41%
At berth in the EU8%

64% of this ship's CO₂ falls under the EU ETS (2,168 t).

Fuel burned laden

–

Not reported

CO₂ at berth

279 t

8.2% of the ship's CO₂, alongside in EU ports

Methane (CH₄)

0.1 t

Mainly from LNG; small for oil, biofuel and methanol

CO₂eq uplift

+53 t

+1.6% CO₂eq on top of CO₂ alone, 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 kg/nm

KLARA
Oil tanker median

80.0100.0120.0140.0

’182018’192019’202020’212021’252025

Average speed, kn

KLARA
Oil tanker median

4.06.08.010.012.014.0

’182018’192019’202020’212021’252025

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

KLARA
Oil tanker median

5.010.015.020.0

’182018’192019’202020’212021’252025

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2021→2025	+7.7 kn	−8%	+142%	+525%	−64%	7.7 kn faster, fuel per mile down 8%; better than speed alone explains (hull, engine or trade).
2020→2021	−0.8 kn	−7%	−21%	−71%	+73%	0.8 kn slower, fuel per mile down 7%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	−5.3 kn	+6%	−46%	−85%	−33%	5.3 kn slower, fuel per mile up 6%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	+4.0 kn	−9%	+44%	+65%	+33%	4.0 kn faster, fuel per mile down 9%; 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	Hours at seah	Average speedknots at sea	Fuel kg/nmthis ship	CO₂ per transport work (cargo)g/t·nm, this ship	Laden fuel
2025	World Tankers Management Pte	1,080	3,395	12,355	1,006	12.3	87.4	7.28	–
2021	not published	189	590	1,978	428	4.6	95.3	20.0	–
2020	not published	708	2,231	6,886	1,264	5.4	103	11.5	–
2019	not published	4,405	13,796	45,422	4,238	10.7	97.0	17.1	–
2018	not published	2,941	9,317	27,560	4,087	6.7	107	12.9	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	World Tankers Management Pte	7.28	7.95	−8%	703 of 1,665	DNV	B
2021	not published	20.0	8.86	+125%	1,524 of 1,789	DNV	B
2020	not published	11.5	9.03	+28%	1,206 of 1,870	DNV	A
2019	not published	17.1	8.83	+94%	1,570 of 1,919	DNV	A
2018	not published	12.9	8.86	+45%	1,286 of 1,779	DNV	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.