Navalyze · Oil tanker · Ship

PROMITHEAS

IMO: 9305611
Type: Oil tanker
Average cargo carried: 42,185 t
Flag (estimated): Greece
Port of registry: Piraeus
Technical efficiency: EEXI 3.28 g CO₂/t·nm
Ice class: IA

ISM company (DoC holder) in 2025: Tsakos Shipping & Trading S.A. · part of Tsakos

Report year

2019 at a glance

From the 2019 THETIS-MRV report. Carries about 56,195 t of cargo on average.

Fuel kg/nm

185

Oil tanker median 138 kg/nm (+34%)

CO₂ per transport work (cargo)

10.4

g CO₂/t·nm · Oil tanker median 8.83 (+18%)

Average speed

9.7 kn

Oil tanker median 9.7 kn (+0%)

Fuel per day at sea

43.3 t/day

Fuel consumed

10,504 t

CO₂ emitted

33,206 t

Distance sailed

56,709 nm

CO₂ ÷ CO₂ per mile

Time at sea

5,817 h

242 days, 66% 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 176 kg/nm · median 129 (+37%)

76.1Ranks 1,409 of 1,665, lowest first191

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

8.0Faster than 30% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 13.2 g CO₂/t·nm · median 7.95 (+66%)

4.51Ranks 1,239 of 1,665, lowest first27.7

Middle 80% of shipsMiddle 50%Oil tanker medianThis ship

Where the emissions happen, 2019

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 ports1%
From the EU36%
Into the EU52%
At berth in the EU11%

Fuel burned laden

–

Not reported

CO₂ at berth

3,696 t

11.1% 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

PROMITHEAS
Oil tanker median

120.0140.0160.0180.0200.0220.0

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

Average speed, kn

PROMITHEAS
Oil tanker median

7.08.09.010.011.0

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

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

PROMITHEAS
Oil tanker median

6.08.010.012.014.016.0

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

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	+2.2 kn	−13%	+12%	+9%	−8%	2.2 kn faster, fuel per mile down 13%; better than speed alone explains (hull, engine or trade).
2023→2024	+0.0 kn	+2%	+1%	+6%	−2%	Same speed, fuel per mile flat.
2022→2023	−2.5 kn	+28%	−3%	−22%	+117%	2.5 kn slower, fuel per mile up 28%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	+1.7 kn	−4%	+16%	+2%	−29%	1.7 kn faster, fuel per mile down 4%; better than speed alone explains (hull, engine or trade).
2020→2021	−2.2 kn	−9%	−28%	−35%	−8%	2.2 kn slower, fuel per mile down 9%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	+1.1 kn	−3%	+7%	+2%	−0%	1.1 kn faster, fuel per mile down 3%; better than speed alone explains (hull, engine or trade).
2018→2019	−1.3 kn	−9%	−20%	+24%	−27%	1.3 kn slower, fuel per mile down 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	Tsakos Shipping & Trading S.A.	6,103	19,271	34,634	3,461	10.0	176	13.2	50%
2024	Tsakos Shipping & Trading S.A.	6,441	20,249	31,830	4,102	7.8	202	14.4	60%
2023	not published	5,963	18,875	29,916	3,815	7.8	199	14.7	–
2022	not published	6,021	19,004	38,598	3,734	10.3	156	6.79	–
2021	not published	6,169	19,542	37,836	4,421	8.6	163	9.55	–
2020	not published	10,391	32,841	58,047	5,382	10.8	179	10.4	–
2019	not published	10,504	33,206	56,709	5,817	9.7	185	10.4	–
2018	not published	9,320	29,447	45,563	4,135	11.0	205	14.2	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	Tsakos Shipping & Trading S.A.	13.2	7.95	+66%	1,239 of 1,665	Lloyd's Register	A
2024	Tsakos Shipping & Trading S.A.	14.4	8.06	+78%	1,408 of 1,787	Lloyd's Register	A
2023	not published	14.7	8.44	+74%	1,414 of 1,797	Lloyd's Register	–
2022	not published	6.79	8.51	−20%	637 of 1,961	Lloyd's Register	–
2021	not published	9.55	8.86	+8%	991 of 1,789	Lloyd's Register	–
2020	not published	10.4	9.03	+15%	1,100 of 1,870	Lloyd's Register	–
2019	not published	10.4	8.83	+18%	1,203 of 1,919	Lloyd's Register	–
2018	not published	14.2	8.86	+60%	1,345 of 1,779	Lloyd's Register	–

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.