Navalyze · Oil tanker · Ship

PROFESSOR AZIZ ALIYEV

IMO: 9823821
Type: Oil tanker
Average cargo carried: 3,489 t
Flag (estimated): Panama
Port of registry: Panama
Technical efficiency: EEDI 15.82 g CO₂/t·nm
Ice class: IC

ISM company (DoC holder) in 2025: Caspian Marine Services B.V

Report year

2022 at a glance

From the 2022 THETIS-MRV report. Carries about 2,486 t of cargo on average.

Fuel kg/nm

49.0

Oil tanker median 131 kg/nm (−63%)

CO₂ per transport work (cargo)

62.4

g CO₂/t·nm · Oil tanker median 8.51 (+633%)

Average speed

6.0 kn

Oil tanker median 10.9 kn (−45%)

Fuel per day at sea

7.1 t/day

Fuel consumed

311 t

CO₂ emitted

984 t

Distance sailed

6,344 nm

CO₂ ÷ CO₂ per mile

Time at sea

1,057 h

44 days, 12% 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 71.9 kg/nm · median 129 (−44%)

76.1Ranks 138 of 1,665, lowest first191

Average speedThis ship 5.3 kn · median 10.7 (−50%)

8.0Faster than 1% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 66.0 g CO₂/t·nm · median 7.95 (+731%)

4.51Ranks 1,642 of 1,665, lowest first27.7

Middle 80% of shipsMiddle 50%Oil tanker medianThis ship

Where the emissions happen, 2022

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 ports10%
From the EU44%
Into the EU40%
At berth in the EU5%

Fuel burned laden

–

Not reported

CO₂ at berth

55 t

5.5% 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

PROFESSOR AZIZ ALIYEV
Oil tanker median

25.050.075.0100.0125.0150.0

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

Average speed, kn

PROFESSOR AZIZ ALIYEV
Oil tanker median

4.06.08.010.012.0

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

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

PROFESSOR AZIZ ALIYEV
Oil tanker median

0.020.040.060.080.0

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

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	−2.8 kn	+46%	−5%	−49%	+110%	2.8 kn slower, fuel per mile up 46%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2024	+2.1 kn	+1%	+35%	+95%	−50%	2.1 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2021→2022	+1.5 kn	−3%	+31%	−42%	+23%	1.5 kn faster, fuel per mile down 3%; better than speed alone explains (hull, engine or trade).
2020→2021	−4.1 kn	+14%	−41%	+60%	+67%	4.1 kn slower, fuel per mile up 14%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	+2.2 kn	−8%	+24%	−72%	−42%	2.2 kn faster, fuel per mile down 8%; better than speed alone explains (hull, engine or trade).
2018→2019	−0.9 kn	+18%	+3%	+24%	+38%	0.9 kn slower, fuel per mile up 18%; 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	Caspian Marine Services B.V	455	1,459	6,333	1,202	5.3	71.9	66.0	52%
2024	Caspian Marine Services B.V	610	1,954	12,361	1,532	8.1	49.3	31.5	96%
2022	not published	311	984	6,344	1,057	6.0	49.0	62.4	–
2021	not published	551	1,743	10,897	2,428	4.5	50.6	50.6	–
2020	not published	301	960	6,806	788	8.6	44.3	30.3	–
2019	not published	1,152	3,604	23,962	3,747	6.4	48.1	52.5	–
2018	not published	790	2,469	19,284	2,646	7.3	40.9	38.1	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	Caspian Marine Services B.V	66.0	7.95	+731%	1,642 of 1,665	ABS	–
2024	Caspian Marine Services B.V	31.5	8.06	+291%	1,667 of 1,787	ABS	A+B
2022	not published	62.4	8.51	+633%	1,926 of 1,961	ABS	A+B
2021	not published	50.6	8.86	+471%	1,732 of 1,789	ABS	A+B
2020	not published	30.3	9.03	+236%	1,730 of 1,870	ABS	A+B
2019	not published	52.5	8.83	+494%	1,865 of 1,919	ABS	A+B
2018	not published	38.1	8.86	+330%	1,703 of 1,779	ABS	A+B

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.