Navalyze · Oil tanker · Ship

RELIABLE WARRIOR

IMO: 9753557
Type: Oil tanker
Average cargo carried: 26,833 t
Flag (estimated): Greece
Port of registry: Andros
Technical efficiency: EEXI 2.90 g CO₂/t·nm

ISM company (DoC holder) in 2025: Polembros Shipping Ltd · part of Polembros

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 26,833 t of cargo on average.

Fuel kg/nm

171

Oil tanker median 129 kg/nm (+33%)

CO₂ per transport work (cargo)

20.1

g CO₂/t·nm · Oil tanker median 7.95 (+152%)

Average speed

10.7 kn

Oil tanker median 10.7 kn (+0%)

Fuel per day at sea

44.1 t/day

Fuel consumed

1,608 t

CO₂ emitted

5,056 t

5,135 t CO₂eq incl. CH₄ and N₂O

Distance sailed

9,397 nm

CO₂ ÷ CO₂ per mile

Time at sea

876 h

37 days, 10% 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 171 kg/nm · median 129 (+33%)

76.1Ranks 1,375 of 1,665, lowest first191

Average speedThis ship 10.7 kn · median 10.7 (+0%)

8.0Faster than 50% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 20.1 g CO₂/t·nm · median 7.95 (+152%)

4.51Ranks 1,395 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 ports4%
From the EU43%
Into the EU42%
At berth in the EU11%

59% of this ship's CO₂ falls under the EU ETS (2,983 t).

Fuel burned laden

–

Not reported

CO₂ at berth

551 t

10.9% 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

+79 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

RELIABLE WARRIOR
Oil tanker median

120.0140.0160.0180.0

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

Average speed, kn

RELIABLE WARRIOR
Oil tanker median

8.09.010.011.012.0

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

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

RELIABLE WARRIOR
Oil tanker median

0.05.010.015.020.025.0

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

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	+38%	+24%	−24%	+534%	1.2 kn slower, fuel per mile up 38%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	+1.5 kn	−19%	−7%	+68%	−37%	1.5 kn faster, fuel per mile down 19%; better than speed alone explains (hull, engine or trade).
2022→2023	+0.8 kn	+7%	+15%	−38%	−29%	0.8 kn faster, fuel per mile up 7%; better than speed alone explains (hull, engine or trade).
2020→2022	−2.0 kn	+6%	−12%	−64%	+53%	2.0 kn slower, fuel per mile up 6%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	+2.1 kn	+12%	+37%	+168%	−49%	2.1 kn faster, fuel per mile up 12%; better than speed alone explains (hull, engine or trade).
2018→2019	+1.1 kn	−32%	−23%	−5%	+51%	1.1 kn faster, fuel per mile down 32%; 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	Polembros Shipping Ltd	1,608	5,056	9,397	876	10.7	171	20.1	–
2024	Polembros Shipping Ltd	1,537	4,798	12,364	1,040	11.9	124	3.16	–
2023	not published	1,124	3,553	7,370	710	10.4	153	5.02	–
2022	not published	1,714	5,366	11,962	1,241	9.6	143	7.09	–
2020	not published	4,524	14,271	33,567	2,884	11.6	135	4.64	–
2019	not published	1,509	4,717	12,513	1,319	9.5	121	9.15	–
2018	not published	2,334	7,290	13,170	1,565	8.4	177	6.05	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	Polembros Shipping Ltd	20.1	7.95	+152%	1,395 of 1,665	DNV	A
2024	Polembros Shipping Ltd	3.16	8.06	−61%	46 of 1,787	DNV	A
2023	not published	5.02	8.44	−41%	228 of 1,797	DNV	A
2022	not published	7.09	8.51	−17%	696 of 1,961	DNV	A
2020	not published	4.64	9.03	−49%	172 of 1,870	EMICERT	A
2019	not published	9.15	8.83	+4%	1,011 of 1,919	EMICERT	A
2018	not published	6.05	8.86	−32%	431 of 1,779	EMICERT	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.