Navalyze · Chemical tanker · Ship

STOLT EFFORT

IMO: 9178202
Type: Chemical tanker
Average cargo carried: 25,899 t
Flag (estimated): Cayman Islands
Port of registry: George Town

ISM company (DoC holder) in 2025: Stolt Tankers BV

Report year

2020 at a glance

From the 2020 THETIS-MRV report. Carries about 29,037 t of cargo on average.

Fuel kg/nm

127

Chemical tanker median 85.7 kg/nm (+48%)

CO₂ per transport work (cargo)

13.7

g CO₂/t·nm · Chemical tanker median 16.2 (−15%)

Average speed

13.1 kn

Chemical tanker median 11.4 kn (+15%)

Fuel per day at sea

40.0 t/day

Fuel consumed

1,580 t

CO₂ emitted

4,941 t

Distance sailed

12,429 nm

CO₂ ÷ CO₂ per mile

Time at sea

949 h

40 days, 11% of the year

Within the chemical tanker fleet, 2025

Set against all 1,460 chemical 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 136 kg/nm · median 79.7 (+71%)

52.8Ranks 1,435 of 1,460, lowest first111

Average speedThis ship 12.2 kn · median 11.1 (+10%)

8.8Faster than 87% of chemical tanker ships12.4

CO₂ per transport work (cargo)This ship 16.4 g CO₂/t·nm · median 15.0 (+9%)

7.93Ranks 802 of 1,460, lowest first40.2

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 ports0%
From the EU33%
Into the EU62%
At berth in the EU5%

Fuel burned laden

–

Not reported

CO₂ at berth

264 t

5.3% 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

STOLT EFFORT
Chemical tanker median

60.080.0100.0120.0140.0

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

Average speed, kn

STOLT EFFORT
Chemical tanker median

6.08.010.012.014.0

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

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

STOLT EFFORT
Chemical tanker median

12.014.016.018.020.0

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

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	−0.1 kn	+4%	+4%	+21%	+15%	Same speed, fuel per mile up 4%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	−0.1 kn	+17%	+17%	+35%	+14%	Same speed, fuel per mile up 17%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	+5.1 kn	−14%	+45%	+1%	−32%	5.1 kn faster, fuel per mile down 14%; better than speed alone explains (hull, engine or trade).
2021→2022	−3.4 kn	+14%	−22%	−8%	+31%	3.4 kn slower, fuel per mile up 14%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	−2.4 kn	−10%	−27%	−5%	+3%	2.4 kn slower, fuel per mile down 10%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2020	+1.5 kn	+0%	+13%	−49%	−27%	1.5 kn faster, fuel per mile flat; 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	Stolt Tankers BV	2,420	7,542	17,778	1,452	12.2	136	16.4	–
2024	Stolt Tankers BV	1,911	6,023	14,652	1,187	12.3	130	14.3	–
2023	not published	1,214	3,786	10,888	880	12.4	112	12.5	–
2022	not published	1,408	4,444	10,815	1,475	7.3	130	18.5	–
2021	not published	1,347	4,219	11,804	1,108	10.7	114	14.1	–
2020	not published	1,580	4,941	12,429	949	13.1	127	13.7	–
2018	not published	3,107	9,738	24,509	2,113	11.6	127	18.6	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Chemical tanker median	vs Chemical tanker	Rank	Verifier	Methods
2025	Stolt Tankers BV	16.4	15.0	+9%	802 of 1,460	DNV	B
2024	Stolt Tankers BV	14.3	16.7	−15%	524 of 1,274	DNV	B
2023	not published	12.5	16.2	−23%	394 of 1,314	DNV	B
2022	not published	18.5	16.1	+15%	813 of 1,409	DNV	B
2021	not published	14.1	16.7	−16%	492 of 1,343	DNV	B
2020	not published	13.7	16.2	−15%	464 of 1,312	Lloyd's Register	B
2018	not published	18.6	17.1	+9%	734 of 1,294	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.