Navalyze · Oil tanker · Ship

PATMOS WARRIOR

IMO: 9337418
Type: Oil tanker
Average cargo carried: 69,567 t
Flag (estimated): Liberia
Port of registry: Monrovia
Technical efficiency: EEXI 3.45 g CO₂/t·nm

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

Report year

2021 at a glance

From the 2021 THETIS-MRV report. Carries about 56,391 t of cargo on average.

Fuel kg/nm

179

Oil tanker median 129 kg/nm (+39%)

CO₂ per transport work (cargo)

10.1

g CO₂/t·nm · Oil tanker median 8.86 (+14%)

Average speed

9.9 kn

Oil tanker median 10.7 kn (−7%)

Fuel per day at sea

42.5 t/day

Fuel consumed

6,130 t

CO₂ emitted

19,425 t

Distance sailed

34,241 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,465 h

144 days, 40% of the year

Within the oil tanker fleet, 2024

Set against all 1,787 oil tanker ships with a full-year 2024 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 174 kg/nm · median 129 (+35%)

79.5Ranks 1,481 of 1,787, lowest first194

Average speedThis ship 8.7 kn · median 10.9 (−20%)

8.1Faster than 13% of oil tanker ships12.3

CO₂ per transport work (cargo)This ship 7.81 g CO₂/t·nm · median 8.06 (−3%)

4.44Ranks 845 of 1,787, lowest first25.7

Middle 80% of shipsMiddle 50%Oil tanker medianThis ship

Where the emissions happen, 2021

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 ports5%
From the EU29%
Into the EU45%
At berth in the EU21%

Fuel burned laden

–

Not reported

CO₂ at berth

4,031 t

20.8% 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

PATMOS WARRIOR
Oil tanker median

100.0150.0200.0250.0300.0

’192019’202020’212021’222022’232023’242024

Average speed, kn

PATMOS WARRIOR
Oil tanker median

8.09.010.011.0

’192019’202020’212021’222022’232023’242024

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

PATMOS WARRIOR
Oil tanker median

5.010.015.020.025.0

’192019’202020’212021’222022’232023’242024

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2023→2024	−1.4 kn	+15%	−1%	−19%	+29%	1.4 kn slower, fuel per mile up 15%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	+1.4 kn	−8%	+6%	−17%	−33%	1.4 kn faster, fuel per mile down 8%; better than speed alone explains (hull, engine or trade).
2021→2022	−1.2 kn	−8%	−19%	+3%	−10%	1.2 kn slower, fuel per mile down 8%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	−0.1 kn	−30%	−31%	+76%	−52%	Same speed, fuel per mile down 30%; better than speed alone explains (hull, engine or trade).
2019→2020	−0.1 kn	+58%	+56%	−12%	+161%	Same speed, fuel per mile up 58%; worse than speed alone explains (fouling, weather, loading or trade).

Part-year reports are left out of these comparisons. 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
2025part-year	Polembros Shipping Ltd	1,456	4,586	8,547	806	10.6	170	11.4	–
2024	Polembros Shipping Ltd	4,106	12,851	23,652	2,733	8.7	174	7.81	–
2023	not published	4,415	14,005	29,194	2,902	10.1	151	6.04	–
2022	not published	5,835	18,314	35,370	4,059	8.7	165	9.08	–
2021	not published	6,130	19,425	34,241	3,465	9.9	179	10.1	–
2020	not published	4,988	15,780	19,488	1,949	10.0	256	21.1	–
2019	not published	3,586	11,280	22,083	2,191	10.1	162	8.07	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025part-year	Polembros Shipping Ltd	–	–	–	–	DNV	A
2024	Polembros Shipping Ltd	7.81	8.06	−3%	845 of 1,787	DNV	A
2023	not published	6.04	8.44	−28%	437 of 1,797	DNV	A
2022	not published	9.08	8.51	+7%	1,073 of 1,961	DNV	A
2021	not published	10.1	8.86	+14%	1,048 of 1,789	DNV	A
2020	not published	21.1	9.03	+133%	1,601 of 1,870	EMICERT	A
2019	not published	8.07	8.83	−9%	823 of 1,919	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.