Navalyze · Oil tanker · Ship

MARAN PENELOPE

IMO: 9402914
Type: Oil tanker
Average cargo carried: 52,435 t
Flag (estimated): Greece
Port of registry: Piraeus
Technical efficiency: EIV 3.28 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 80,193 t of cargo on average.

Fuel kg/nm

204

Oil tanker median 129 kg/nm (+58%)

CO₂ per transport work (cargo)

7.97

g CO₂/t·nm · Oil tanker median 8.44 (−6%)

Average speed

12.2 kn

Oil tanker median 11.0 kn (+11%)

Fuel per day at sea

59.6 t/day

Fuel consumed

9,113 t

CO₂ emitted

28,512 t

Distance sailed

44,610 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,671 h

153 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 155 kg/nm · median 129 (+20%)

76.1Ranks 1,247 of 1,665, lowest first191

Average speedThis ship 11.6 kn · median 10.7 (+8%)

8.0Faster than 76% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 9.22 g CO₂/t·nm · median 7.95 (+16%)

4.51Ranks 992 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 EU45%
Into the EU43%
At berth in the EU9%

Fuel burned laden

5,933 t

65% of all fuel; 35% in ballast or unladen

CO₂ at berth

2,543 t

8.9% 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 PENELOPE
Oil tanker median

120.0140.0160.0180.0200.0220.0

’182018’222022’232023’242024’252025

Average speed, kn

MARAN PENELOPE
Oil tanker median

6.08.010.012.014.0

’182018’222022’232023’242024’252025

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

MARAN PENELOPE
Oil tanker median

0.02.04.06.08.010.0

’182018’222022’232023’242024’252025

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	+1.7 kn	−11%	+4%	−5%	+16%	1.7 kn faster, fuel per mile down 11%; better than speed alone explains (hull, engine or trade).
2023→2024	−2.3 kn	−15%	−31%	−40%	+0%	2.3 kn slower, fuel per mile down 15%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	+1.1 kn	+9%	+19%	+67%	+60%	1.1 kn faster, fuel per mile up 9%; better than speed alone explains (hull, engine or trade).
2018→2022	+3.5 kn	−2%	+42%	+235%	+187%	3.5 kn faster, fuel per mile down 2%; 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	MARAN TANKERS MANAGEMENT INC.	3,905	12,205	25,245	2,183	11.6	155	9.22	53%
2024	MARAN TANKERS MANAGEMENT INC.	4,636	14,500	26,606	2,684	9.9	174	7.98	60%
2023	not published	9,113	28,512	44,610	3,671	12.2	204	7.97	65%
2022	not published	5,019	15,670	26,673	2,408	11.1	188	4.99	–
2018	not published	1,531	4,780	7,963	1,047	7.6	192	1.74	–

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.	9.22	7.95	+16%	992 of 1,665	ABS	A
2024	MARAN TANKERS MANAGEMENT INC.	7.98	8.06	−1%	876 of 1,787	ABS	A
2023	not published	7.97	8.44	−6%	816 of 1,797	ABS	A
2022	not published	4.99	8.51	−41%	235 of 1,961	ABS	A
2018	not published	1.74	8.86	−80%	32 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.