Navalyze · Oil tanker · Ship

STENA IMPERO

IMO: 9797400
Type: Oil tanker
Average cargo carried: 35,962 t
Flag (estimated): United Kingdom
Port of registry: London
Technical efficiency: EEXI 4.37 g CO₂/t·nm

ISM company (DoC holder) in 2025: STENA BULK XIII CYPRUS LTD · part of Stena

Report year

2022 at a glance

From the 2022 THETIS-MRV report. Carries about 29,470 t of cargo on average.

Fuel kg/nm

85.9

Oil tanker median 131 kg/nm (−34%)

CO₂ per transport work (cargo)

9.13

g CO₂/t·nm · Oil tanker median 8.51 (+7%)

Average speed

12.5 kn

Oil tanker median 10.9 kn (+15%)

Fuel per day at sea

25.9 t/day

Fuel consumed

3,020 t

CO₂ emitted

9,458 t

Distance sailed

35,154 nm

CO₂ ÷ CO₂ per mile

Time at sea

2,804 h

117 days, 32% 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 88.8 kg/nm · median 129 (−31%)

76.1Ranks 301 of 1,665, lowest first191

Average speedThis ship 11.8 kn · median 10.7 (+10%)

8.0Faster than 81% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 7.73 g CO₂/t·nm · median 7.95 (−3%)

4.51Ranks 789 of 1,665, lowest first27.7

Middle 80% of shipsMiddle 50%Oil tanker medianThis ship

Where the emissions happen, 2022

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 ports9%
From the EU30%
Into the EU54%
At berth in the EU7%

Fuel burned laden

–

Not reported

CO₂ at berth

685 t

7.2% 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

STENA IMPERO
Oil tanker median

60.080.0100.0120.0140.0

’182018’192019’212021’222022’242024’252025

Average speed, kn

STENA IMPERO
Oil tanker median

9.010.011.012.013.0

’182018’192019’212021’222022’242024’252025

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

STENA IMPERO
Oil tanker median

5.010.015.020.0

’182018’192019’212021’222022’242024’252025

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	−0.1 kn	+11%	+9%	−29%	−0%	Same speed, fuel per mile up 11%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2024	−0.6 kn	−7%	−11%	+7%	−15%	0.6 kn slower, fuel per mile down 7%; in line with the speed change.
2021→2022	+2.1 kn	−21%	−5%	+81%	−48%	2.1 kn faster, fuel per mile down 21%; better than speed alone explains (hull, engine or trade).
2019→2021	−0.7 kn	+41%	+32%	+125%	+156%	0.7 kn slower, fuel per mile up 41%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	+1.4 kn	−9%	+4%	−60%	−13%	1.4 kn faster, fuel per mile down 9%; 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	STENA BULK XIII CYPRUS LTD	2,366	7,405	26,639	2,267	11.8	88.8	7.73	–
2024	STENA BULK XIII CYPRUS LTD	3,011	9,416	37,509	3,144	11.9	80.3	7.76	–
2022	not published	3,020	9,458	35,154	2,804	12.5	85.9	9.13	–
2021	not published	2,115	6,672	19,394	1,869	10.4	109	17.5	–
2019	not published	666	2,089	8,613	775	11.1	77.4	6.83	–
2018	not published	1,853	5,815	21,782	2,242	9.7	85.1	7.85	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	STENA BULK XIII CYPRUS LTD	7.73	7.95	−3%	789 of 1,665	DNV	B+C
2024	STENA BULK XIII CYPRUS LTD	7.76	8.06	−4%	831 of 1,787	DNV	B
2022	not published	9.13	8.51	+7%	1,077 of 1,961	DNV	B
2021	not published	17.5	8.86	+97%	1,465 of 1,789	DNV	B
2019	not published	6.83	17.3	−61%	18 of 1,321	Lloyd's Register	B
2018	not published	7.85	17.1	−54%	41 of 1,294	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.