Navalyze · Chemical tanker · Ship

STENA IMPERATOR

IMO: 9797383
Type: Chemical tanker
Port of registry: London
Technical efficiency: EEXI 4.34 g CO₂/t·nm

ISM company (DoC holder) in 2025: Stena Bulk Cyprus Ltd · part of Stena

Report year

2025 at a glance

From the 2025 THETIS-MRV report.

Fuel per mile

–

CO₂ per transport work (cargo)

–

g CO₂/t·nm

Average speed

–

Fuel per day at sea

–

Fuel consumed

0 t

CO₂ emitted

0 t

0 t CO₂eq incl. CH₄ and N₂O

Distance sailed

–

CO₂ ÷ CO₂ per mile

Time at sea

0 h

0 days, 0% of the year

Within the chemical tanker fleet, 2024

Set against all 1,274 chemical 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 per mileThis ship 86.1 kg/nm · median 80.8 (+7%)

53.8Ranks 743 of 1,274, lowest first110.8

Average speedThis ship 12.0 kn · median 11.0 (+9%)

8.7Faster than 79% of chemical tanker ships12.5

CO₂ per transport work (cargo)This ship 7.44 g CO₂/t·nm · median 16.73 (−56%)

8.47Ranks 60 of 1,274, lowest first41.97

Middle 80% of shipsMiddle 50%Chemical tanker medianThis ship

Where the emissions happen, 2025

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.

The voyage split is not in this year's report.

Fuel burned laden

–

Not reported

CO₂ at berth

–

Alongside in EU ports

Methane (CH₄)

0.0 t

Mainly from LNG; small for oil

CO₂eq ÷ CO₂

–

Uplift from CH₄ and N₂O, counted in full from 2026

Over the years

Full-year reports only. The Chemical tanker median is the middle ship of all chemical tanker ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.

Fuel per mile, kg/nm

STENA IMPERATOR
Chemical tanker median

60.080.0100.0120.0140.0

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

Average speed, kn

STENA IMPERATOR
Chemical tanker median

4.06.08.010.012.014.0

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

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

STENA IMPERATOR
Chemical tanker median

5.010.015.020.0

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

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2024→2025	–	–	–	–	–
2023→2024	+0.5 kn	−5%	+0%	−39%	−1%	0.5 kn faster, fuel per mile down 5%; better than speed alone explains (hull, engine or trade).
2022→2023	+0.0 kn	−13%	−13%	+21%	−29%	Same speed, fuel per mile down 13%; better than speed alone explains (hull, engine or trade).
2021→2022	−0.7 kn	+26%	+18%	−5%	+2%	0.7 kn slower, fuel per mile up 26%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+1.3 kn	+0%	+13%	−21%	+52%	1.3 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2019→2020	+5.3 kn	−17%	+60%	+16%	−28%	5.3 kn faster, fuel per mile down 17%; better than speed alone explains (hull, engine or trade).
2018→2019	−5.2 kn	+43%	−25%	−24%	+61%	5.2 kn slower, fuel per mile up 43%; worse than speed alone explains (fouling, weather, loading 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	At sea h	Speed kn	Fuel kg/nm	CO₂ g/t·nm	Laden fuel
2025	Stena Bulk Cyprus Ltd	0	0	–	0	–	–	–	–
2024	Stena Bulk Cyprus Ltd	1,050	3,287	12,192	1,018	12.0	86.1	7.44	–
2023	not published	1,793	5,620	19,880	1,732	11.5	90.2	7.52	–
2022	not published	1,696	5,349	16,413	1,431	11.5	103.3	10.60	–
2021	not published	1,423	4,449	17,332	1,419	12.2	82.1	10.40	–
2020	not published	1,797	5,637	21,980	2,021	10.9	81.7	6.85	–
2019	not published	1,869	5,871	19,007	3,382	5.6	98.3	9.49	–
2018	not published	1,716	5,386	24,959	2,312	10.8	68.7	5.88	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Chemical tanker median	vs Chemical tanker	Rank	Verifier	Methods
2025	Stena Bulk Cyprus Ltd	–	–	–	–	DNV	B+C
2024	Stena Bulk Cyprus Ltd	7.44	16.73	−56%	60 of 1,274	DNV	B
2023	not published	7.52	16.23	−54%	54 of 1,314	DNV	B
2022	not published	10.60	16.06	−34%	265 of 1,409	DNV	B
2021	not published	10.40	16.69	−38%	207 of 1,343	DNV	B
2020	not published	6.85	16.16	−58%	20 of 1,312	DNV	B
2019	not published	9.49	8.83	+7%	1,065 of 1,919	Lloyd's Register	B
2018	not published	5.88	8.86	−34%	407 of 1,779	Lloyd's Register	B

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Chemical 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 chemical 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.