Navalyze · Chemical tanker · Ship

MARY A

IMO: 9321433
Type: Chemical tanker
Average cargo carried: 2,325 t
Flag (estimated): Italy
Port of registry: Catania
Technical efficiency: EEXI 14.38 g CO₂/t·nm

ISM company (DoC holder) in 2025: MARITTIMA ETNEA S.r.l.

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 2,325 t of cargo on average.

Fuel kg/nm

54.5

Chemical tanker median 79.7 kg/nm (−32%)

CO₂ per transport work (cargo)

75.1

g CO₂/t·nm · Chemical tanker median 15.0 (+399%)

Average speed

9.7 kn

Chemical tanker median 11.1 kn (−13%)

Fuel per day at sea

12.6 t/day

Fuel consumed

1,147 t

CO₂ emitted

3,678 t

3,734 t CO₂eq incl. CH₄ and N₂O

Distance sailed

21,064 nm

CO₂ ÷ CO₂ per mile

Time at sea

2,178 h

91 days, 25% 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 54.5 kg/nm · median 79.7 (−32%)

52.8Ranks 169 of 1,460, lowest first111

Average speedThis ship 9.7 kn · median 11.1 (−13%)

8.8Faster than 19% of chemical tanker ships12.4

CO₂ per transport work (cargo)This ship 75.1 g CO₂/t·nm · median 15.0 (+399%)

7.93Ranks 1,437 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 ports21%
From the EU36%
Into the EU21%
At berth in the EU22%

72% of this ship's CO₂ falls under the EU ETS (2,666 t).

Fuel burned laden

–

Not reported

CO₂ at berth

783 t

21.3% of the ship's CO₂, alongside in EU ports

Methane (CH₄)

0.1 t

Mainly from LNG; small for oil, biofuel and methanol

CO₂eq uplift

+56 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

MARY A
Chemical tanker median

50.060.070.080.090.0100.0

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

Average speed, kn

MARY A
Chemical tanker median

4.06.08.010.012.0

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

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

MARY A
Chemical tanker median

0.050.0100150

’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	+0.1 kn	−11%	−11%	+29%	+2%	Same speed, fuel per mile down 11%; better than speed alone explains (hull, engine or trade).
2023→2024	−0.3 kn	+0%	−2%	−3%	+8%	0.3 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	−0.3 kn	+5%	+1%	−6%	−4%	Same speed, fuel per mile up 5%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	−0.2 kn	+7%	+5%	−11%	+9%	Same speed, fuel per mile up 7%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+0.5 kn	−20%	−16%	+2%	−24%	0.5 kn faster, fuel per mile down 20%; better than speed alone explains (hull, engine or trade).
2019→2020	+4.0 kn	+10%	+85%	−10%	+4%	4.0 kn faster, fuel per mile up 10%; better than speed alone explains (hull, engine or trade).
2018→2019	+1.3 kn	−27%	−7%	+36%	−33%	1.3 kn faster, fuel per mile down 27%; 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	MARITTIMA ETNEA S.r.l.	1,147	3,678	21,064	2,178	9.7	54.5	75.1	–
2024	MARITTIMA ETNEA S.r.l.	1,003	3,215	16,309	1,695	9.6	61.5	73.6	–
2023	not published	1,034	3,315	16,879	1,706	9.9	61.2	68.3	–
2022	not published	1,042	3,341	17,866	1,749	10.2	58.3	71.3	–
2021	not published	1,100	3,526	20,149	1,945	10.4	54.6	65.7	–
2020	not published	1,340	4,296	19,666	1,992	9.9	68.1	86.6	–
2019	not published	1,355	4,344	21,826	3,726	5.9	62.1	83.6	–
2018	not published	1,358	4,345	16,040	3,480	4.6	84.7	124	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Chemical tanker median	vs Chemical tanker	Rank	Verifier	Methods
2025	MARITTIMA ETNEA S.r.l.	75.1	15.0	+399%	1,437 of 1,460	RINA	B
2024	MARITTIMA ETNEA S.r.l.	73.6	16.7	+340%	1,254 of 1,274	RINA	B
2023	not published	68.3	16.2	+321%	1,285 of 1,314	RINA	B
2022	not published	71.3	16.1	+344%	1,385 of 1,409	RINA	B
2021	not published	65.7	16.7	+294%	1,317 of 1,343	RINA	B
2020	not published	86.6	16.2	+436%	1,309 of 1,312	RINA	B
2019	not published	83.6	17.3	+382%	1,308 of 1,321	RINA	B
2018	not published	124	17.1	+624%	1,282 of 1,294	RINA	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.