Navalyze · Oil tanker · Ship

RS TARA

IMO: 9765354
Type: Oil tanker
Average cargo carried: 55,843 t
Flag (estimated): Marshall Islands
Port of registry: Majuro, Marshall Islands
Technical efficiency: EEDI 2.72 g CO₂/t·nm

ISM company (DoC holder) in 2025: Prime Tanker Management Inc

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 55,843 t of cargo on average.

Fuel kg/nm

163

Oil tanker median 129 kg/nm (+27%)

CO₂ per transport work (cargo)

9.20

g CO₂/t·nm · Oil tanker median 7.95 (+16%)

Average speed

10.6 kn

Oil tanker median 10.7 kn (−1%)

Fuel per day at sea

41.5 t/day

Fuel consumed

3,407 t

CO₂ emitted

10,724 t

10,892 t CO₂eq incl. CH₄ and N₂O

Distance sailed

20,874 nm

CO₂ ÷ CO₂ per mile

Time at sea

1,971 h

82 days, 23% 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 163 kg/nm · median 129 (+27%)

76.1Ranks 1,327 of 1,665, lowest first191

Average speedThis ship 10.6 kn · median 10.7 (−1%)

8.0Faster than 46% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 9.20 g CO₂/t·nm · median 7.95 (+16%)

4.51Ranks 989 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 ports0%
From the EU48%
Into the EU41%
At berth in the EU11%

55% of this ship's CO₂ falls under the EU ETS (5,941 t).

Fuel burned laden

1,400 t

41% of all fuel; 59% in ballast or unladen

CO₂ at berth

1,157 t

10.8% of the ship's CO₂, alongside in EU ports

Methane (CH₄)

0.2 t

Mainly from LNG; small for oil, biofuel and methanol

CO₂eq uplift

+168 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

RS TARA
Oil tanker median

120.0130.0140.0150.0160.0170.0

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

Average speed, kn

RS TARA
Oil tanker median

6.08.010.012.014.0

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

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

RS TARA
Oil tanker median

2.04.06.08.010.0

’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	+0.2 kn	+3%	+5%	−30%	+105%	Same speed, fuel per mile up 3%; in line with the speed change.
2023→2024	−1.8 kn	+8%	−8%	+42%	−28%	1.8 kn slower, fuel per mile up 8%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	+0.3 kn	−1%	+1%	−4%	+31%	Same speed, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2020→2022	+0.4 kn	−4%	−1%	+38%	−8%	0.4 kn faster, fuel per mile down 4%; better than speed alone explains (hull, engine or trade).
2019→2020	−0.3 kn	+14%	+12%	−32%	−7%	0.3 kn slower, fuel per mile up 14%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	+5.1 kn	+4%	+82%	+154%	+71%	5.1 kn faster, fuel per mile up 4%; 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	Prime Tanker Management Inc	3,407	10,724	20,874	1,971	10.6	163	9.20	41%
2024	Prime Tanker Management Inc	4,714	14,723	29,677	2,850	10.4	159	4.48	77%
2023	not published	3,072	9,605	20,830	1,714	12.2	148	6.22	56%
2022	not published	3,256	10,160	21,775	1,831	11.9	150	4.76	76%
2020	not published	2,449	7,695	15,728	1,363	11.5	156	5.19	–
2019	not published	3,173	9,939	23,298	1,973	11.8	136	5.56	–
2018	not published	1,205	3,769	9,161	1,360	6.7	132	3.26	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	Prime Tanker Management Inc	9.20	7.95	+16%	989 of 1,665	ABS	B+C
2024	Prime Tanker Management Inc	4.48	8.06	−44%	188 of 1,787	ABS	–
2023	not published	6.22	8.44	−26%	480 of 1,797	ABS	B+C
2022	not published	4.76	8.51	−44%	178 of 1,961	ABS	B+C
2020	not published	5.19	9.03	−43%	234 of 1,870	ABS	B+C
2019	not published	5.56	8.83	−37%	338 of 1,919	ABS	B+C
2018	not published	3.26	8.86	−63%	107 of 1,779	ABS	B+C

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.