Navalyze · Chemical tanker · Ship

GEMMA

IMO: 9808314
Type: Chemical tanker
Average cargo carried: 17,733 t
Flag (estimated): Malta
Port of registry: Valetta
Technical efficiency: EEXI 5.53 g CO₂/t·nm

ISM company (DoC holder) in 2025: SUPER ECO TANKERS MANAGEMENT INC

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 17,733 t of cargo on average.

Fuel kg/nm

94.8

Chemical tanker median 79.7 kg/nm (+19%)

CO₂ per transport work (cargo)

17.0

g CO₂/t·nm · Chemical tanker median 15.0 (+13%)

Average speed

8.9 kn

Chemical tanker median 11.1 kn (−20%)

Fuel per day at sea

20.2 t/day

Fuel consumed

3,031 t

CO₂ emitted

9,627 t

9,775 t CO₂eq incl. CH₄ and N₂O

Distance sailed

31,971 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,592 h

150 days, 41% 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 94.8 kg/nm · median 79.7 (+19%)

52.8Ranks 1,083 of 1,460, lowest first111

Average speedThis ship 8.9 kn · median 11.1 (−20%)

8.8Faster than 11% of chemical tanker ships12.4

CO₂ per transport work (cargo)This ship 17.0 g CO₂/t·nm · median 15.0 (+13%)

7.93Ranks 822 of 1,460, lowest first40.2

Middle 80% of shipsMiddle 50%Chemical tanker medianThis ship

Where the emissions happen, 2025

THETIS splits each ship's emissions 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 ports37%
From the EU19%
Into the EU31%
At berth in the EU12%

66% of this ship's CO₂ falls under the EU ETS (6,346 t).

Fuel burned laden

–

Not reported

CO₂ at berth

1,148 t

11.9% of the ship's CO₂, alongside in EU ports

Methane (CH₄)

0.2 t

Mainly from LNG; small for oil, biofuel and methanol

CO₂eq uplift

+148 t

+1.5% CO₂eq on top of CO₂ alone, 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 kg/nm

GEMMA
Chemical tanker median

70.080.090.0100.0

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

Average speed, kn

GEMMA
Chemical tanker median

8.09.010.011.012.013.0

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

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

GEMMA
Chemical tanker median

5.010.015.020.025.030.0

’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	−3.9 kn	+20%	−17%	+11%	+74%	3.9 kn slower, fuel per mile up 20%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	+1.5 kn	−18%	−8%	+80%	−64%	1.5 kn faster, fuel per mile down 18%; better than speed alone explains (hull, engine or trade).
2022→2023	+2.3 kn	+3%	+29%	−51%	+110%	2.3 kn faster, fuel per mile up 3%; better than speed alone explains (hull, engine or trade).
2021→2022	−1.8 kn	+2%	−15%	+25%	−23%	1.8 kn slower, fuel per mile up 2%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	−1.2 kn	+17%	+4%	−58%	−2%	1.2 kn slower, fuel per mile up 17%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	+0.6 kn	+6%	+12%	+47%	−11%	0.6 kn faster, fuel per mile up 6%; better than speed alone explains (hull, engine or trade).
2018→2019	+0.2 kn	−13%	−12%	+22%	+38%	Same speed, fuel per mile down 13%; 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	SUPER ECO TANKERS MANAGEMENT INC	3,031	9,627	31,971	3,592	8.9	94.8	17.0	–
2024	SUPER ECO TANKERS MANAGEMENT INC	2,279	7,107	28,791	2,245	12.8	79.1	9.78	–
2023	not published	1,548	4,867	15,967	1,409	11.3	97.0	27.1	–
2022	not published	3,080	9,651	32,618	3,622	9.0	94.4	12.9	–
2021	not published	2,404	7,550	26,045	2,416	10.8	92.3	16.8	–
2020	not published	4,865	15,203	61,402	5,109	12.0	79.2	17.1	–
2019	not published	3,138	9,794	41,821	3,677	11.4	75.0	19.3	–
2018	not published	2,962	9,258	34,342	3,058	11.2	86.2	14.0	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Chemical tanker median	vs Chemical tanker	Rank	Verifier	Methods
2025	SUPER ECO TANKERS MANAGEMENT INC	17.0	15.0	+13%	822 of 1,460	RINA	A
2024	SUPER ECO TANKERS MANAGEMENT INC	9.78	16.7	−42%	229 of 1,274	RINA	A
2023	not published	27.1	16.2	+67%	978 of 1,314	RINA	A
2022	not published	12.9	16.1	−20%	464 of 1,409	RINA	A
2021	not published	16.8	16.7	+1%	684 of 1,343	RINA	A
2020	not published	17.1	16.2	+6%	715 of 1,312	RINA	A
2019	not published	19.3	17.3	+11%	770 of 1,321	RINA	A
2018	not published	14.0	17.1	−18%	448 of 1,294	RINA	A

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.