Navalyze · Oil tanker · Ship

MARAN POSEIDON

IMO: 9402926
Type: Oil tanker
Average cargo carried: 86,146 t
Flag (estimated): Greece
Port of registry: Piraeus
Technical efficiency: EEXI 2.83 g CO₂/t·nm

ISM company (DoC holder) in 2025: MARAN TANKERS MANAGEMENT INC. · part of Maran

Report year

2023 at a glance

From the 2023 THETIS-MRV report. Carries about 78,399 t of cargo on average.

Fuel kg/nm

177

Oil tanker median 129 kg/nm (+37%)

CO₂ per transport work (cargo)

7.05

g CO₂/t·nm · Oil tanker median 8.44 (−16%)

Average speed

12.1 kn

Oil tanker median 11.0 kn (+10%)

Fuel per day at sea

51.2 t/day

Fuel consumed

7,626 t

CO₂ emitted

23,827 t

Distance sailed

43,109 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,572 h

149 days, 41% 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 189 kg/nm · median 129 (+47%)

76.1Ranks 1,489 of 1,665, lowest first191

Average speedThis ship 8.6 kn · median 10.7 (−20%)

8.0Faster than 14% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 6.87 g CO₂/t·nm · median 7.95 (−14%)

4.51Ranks 619 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 ports3%
From the EU38%
Into the EU53%
At berth in the EU6%

Fuel burned laden

4,263 t

56% of all fuel; 44% in ballast or unladen

CO₂ at berth

1,492 t

6.3% 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

MARAN POSEIDON
Oil tanker median

100.0150.0200.0250.0

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

Average speed, kn

MARAN POSEIDON
Oil tanker median

8.010.012.014.0

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

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

MARAN POSEIDON
Oil tanker median

6.07.08.09.010.011.0

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

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	−1.2 kn	−1%	−13%	−19%	−6%	1.2 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	−2.3 kn	+8%	−13%	+16%	+4%	2.3 kn slower, fuel per mile up 8%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	+1.6 kn	−0%	+14%	+92%	+8%	1.6 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2021→2022	+0.0 kn	−24%	−24%	+472%	+1%	Same speed, fuel per mile down 24%; better than speed alone explains (hull, engine or trade).
2020→2021	−2.5 kn	+15%	−6%	−61%	−36%	2.5 kn slower, fuel per mile up 15%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2020	+0.4 kn	+14%	+18%	−48%	+54%	0.4 kn faster, fuel per mile up 14%; 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	MARAN TANKERS MANAGEMENT INC.	7,626	23,934	40,441	4,712	8.6	189	6.87	64%
2024	MARAN TANKERS MANAGEMENT INC.	9,532	29,872	49,966	5,121	9.8	191	7.30	58%
2023	not published	7,626	23,827	43,109	3,572	12.1	177	7.05	56%
2022	not published	3,991	12,484	22,487	2,137	10.5	178	6.55	64%
2021	not published	920	2,882	3,931	373	10.5	234	6.51	76%
2020	not published	2,074	6,511	10,198	786	13.0	203	10.2	–
2018	not published	3,472	10,877	19,480	1,549	12.6	178	6.66	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	MARAN TANKERS MANAGEMENT INC.	6.87	7.95	−14%	619 of 1,665	ABS	A
2024	MARAN TANKERS MANAGEMENT INC.	7.30	8.06	−9%	740 of 1,787	ABS	A
2023	not published	7.05	8.44	−16%	654 of 1,797	ABS	A
2022	not published	6.55	8.51	−23%	586 of 1,961	ABS	A
2021	not published	6.51	8.86	−27%	503 of 1,789	ABS	A
2020	not published	10.2	9.03	+13%	1,086 of 1,870	Lloyd's Register	A
2018	not published	6.66	8.86	−25%	519 of 1,779	Lloyd's Register	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.