Navalyze · Chemical tanker · Ship

STENA IMPERATOR

IMO: 9797383
Type: Chemical tanker
Flag (estimated): United Kingdom
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

2020 at a glance

From the 2020 THETIS-MRV report. Carries about 37,436 t of cargo on average.

Fuel kg/nm

81.7

Chemical tanker median 85.7 kg/nm (−5%)

CO₂ per transport work (cargo)

6.85

g CO₂/t·nm · Chemical tanker median 16.2 (−58%)

Average speed

10.9 kn

Chemical tanker median 11.4 kn (−4%)

Fuel per day at sea

21.3 t/day

Fuel consumed

1,797 t

CO₂ emitted

5,637 t

Distance sailed

21,980 nm

CO₂ ÷ CO₂ per mile

Time at sea

2,021 h

84 days, 23% 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 kg/nmThis ship 86.1 kg/nm · median 80.8 (+7%)

53.8Ranks 743 of 1,274, lowest first111

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 16.7 (−56%)

8.47Ranks 60 of 1,274, lowest first42.0

Middle 80% of shipsMiddle 50%Chemical tanker medianThis ship

Where the emissions happen, 2020

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 ports10%
From the EU38%
Into the EU45%
At berth in the EU7%

Fuel burned laden

–

Not reported

CO₂ at berth

378 t

6.7% 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 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 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	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	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	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 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	10.6	–
2021	not published	1,423	4,449	17,332	1,419	12.2	82.1	10.4	–
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	16.7	−56%	60 of 1,274	DNV	B
2023	not published	7.52	16.2	−54%	54 of 1,314	DNV	B
2022	not published	10.6	16.1	−34%	265 of 1,409	DNV	B
2021	not published	10.4	16.7	−38%	207 of 1,343	DNV	B
2020	not published	6.85	16.2	−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.