Navalyze · Oil tanker · Ship

DELTA SUPREME

IMO: 9585895
Type: Oil tanker
Average cargo carried: 75,061 t
Flag (estimated): Bermuda (from the 2021 report)
Technical efficiency: EIV 3.42 g CO₂/t·nm
Former names: STENA SUPREME

ISM company (DoC holder) in 2025: DELTA TANKERS LTD

Report year

2021 at a glance

From the 2021 THETIS-MRV report. Carries about 90,365 t of cargo on average.

Fuel kg/nm

169

Oil tanker median 129 kg/nm (+31%)

CO₂ per transport work (cargo)

5.87

g CO₂/t·nm · Oil tanker median 8.86 (−34%)

Average speed

8.9 kn

Oil tanker median 10.7 kn (−17%)

Fuel per day at sea

36.3 t/day

Fuel consumed

5,364 t

CO₂ emitted

16,803 t

Distance sailed

31,677 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,542 h

148 days, 40% 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 173 kg/nm · median 129 (+34%)

76.1Ranks 1,389 of 1,665, lowest first191

Average speedThis ship 10.5 kn · median 10.7 (−2%)

8.0Faster than 42% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 7.23 g CO₂/t·nm · median 7.95 (−9%)

4.51Ranks 696 of 1,665, lowest first27.7

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 ports3%
From the EU41%
Into the EU46%
At berth in the EU10%

Fuel burned laden

–

Not reported

CO₂ at berth

1,711 t

10.2% 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

DELTA SUPREME
Oil tanker median

100.0120.0140.0160.0180.0

’182018’192019’202020’212021’222022’232023’242024’252025

Average speed, kn

DELTA SUPREME
Oil tanker median

6.08.010.012.0

’182018’192019’202020’212021’222022’232023’242024’252025

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

DELTA SUPREME
Oil tanker median

4.06.08.010.0

’182018’192019’202020’212021’222022’232023’242024’252025

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	+1.1 kn	+41%	+57%	−55%	+45%	1.1 kn faster, fuel per mile up 41%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	−2.2 kn	+5%	−15%	+136%	+20%	2.2 kn slower, fuel per mile up 5%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	+0.5 kn	−22%	−18%	−45%	−58%	0.5 kn faster, fuel per mile down 22%; better than speed alone explains (hull, engine or trade).
2021→2022	+2.2 kn	−12%	+9%	−16%	+70%	2.2 kn faster, fuel per mile down 12%; better than speed alone explains (hull, engine or trade).
2020→2021	−2.0 kn	+30%	+7%	+25%	+36%	2.0 kn slower, fuel per mile up 30%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	+2.9 kn	−14%	+17%	+101%	−31%	2.9 kn faster, fuel per mile down 14%; better than speed alone explains (hull, engine or trade).
2018→2019	+1.1 kn	−3%	+12%	+217%	+55%	1.1 kn faster, fuel per mile down 3%; 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	DELTA TANKERS LTD	2,676	8,405	15,487	1,481	10.5	173	7.23	–
2024	DELTA TANKERS LTD	4,216	13,206	34,409	3,659	9.4	123	5.00	–
2023	not published	1,694	5,290	14,561	1,252	11.6	116	4.17	–
2022	not published	3,966	12,408	26,548	2,397	11.1	149	9.98	–
2021	not published	5,364	16,803	31,677	3,542	8.9	169	5.87	–
2020	not published	3,286	10,297	25,309	2,321	10.9	130	4.33	–
2019	not published	1,910	5,976	12,602	1,580	8.0	152	6.28	–
2018	not published	617	1,931	3,970	574	6.9	156	4.05	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	DELTA TANKERS LTD	7.23	7.95	−9%	696 of 1,665	Lloyd's Register	A
2024	DELTA TANKERS LTD	5.00	8.06	−38%	295 of 1,787	Lloyd's Register	–
2023	not published	4.17	8.44	−51%	84 of 1,797	Lloyd's Register	–
2022	not published	9.98	8.51	+17%	1,192 of 1,961	Lloyd's Register	–
2021	not published	5.87	8.86	−34%	386 of 1,789	DNV	B
2020	not published	4.33	9.03	−52%	137 of 1,870	DNV	B
2019	not published	6.28	8.83	−29%	482 of 1,919	Lloyd's Register	B
2018	not published	4.05	8.86	−54%	164 of 1,779	Lloyd's Register	B

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.