Navalyze · Chemical tanker · Ship

MARY A

IMO: 9321433
Type: Chemical tanker
Average cargo carried: 2,325 t
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 per mile

54.5 kg/nm

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

CO₂ per transport work (cargo)

75.11

g CO₂/t·nm · Chemical tanker median 15.04 (+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 per mileThis ship 54.5 kg/nm · median 79.7 (−32%)

52.8Ranks 169 of 1,460, lowest first111.0

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 75.11 g CO₂/t·nm · median 15.04 (+399%)

7.93Ranks 1,437 of 1,460, lowest first40.17

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.

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

21.3%

Alongside in EU ports

Methane (CH₄)

0.1 t

Mainly from LNG; small for oil

CO₂eq ÷ CO₂

1.015

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

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	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	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	At sea h	Speed kn	Fuel kg/nm	CO₂ g/t·nm	Laden fuel
2025	MARITTIMA ETNEA S.r.l.	1,147	3,678	21,064	2,178	9.7	54.5	75.11	–
2024	MARITTIMA ETNEA S.r.l.	1,003	3,215	16,309	1,695	9.6	61.5	73.63	–
2023	not published	1,034	3,315	16,879	1,706	9.9	61.2	68.30	–
2022	not published	1,042	3,341	17,866	1,749	10.2	58.3	71.30	–
2021	not published	1,100	3,526	20,149	1,945	10.4	54.6	65.69	–
2020	not published	1,340	4,296	19,666	1,992	9.9	68.1	86.64	–
2019	not published	1,355	4,344	21,826	3,726	5.9	62.1	83.56	–
2018	not published	1,358	4,345	16,040	3,480	4.6	84.7	124.04	–

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.	75.11	15.04	+399%	1,437 of 1,460	RINA	B
2024	MARITTIMA ETNEA S.r.l.	73.63	16.73	+340%	1,254 of 1,274	RINA	B
2023	not published	68.30	16.23	+321%	1,285 of 1,314	RINA	B
2022	not published	71.30	16.06	+344%	1,385 of 1,409	RINA	B
2021	not published	65.69	16.69	+294%	1,317 of 1,343	RINA	B
2020	not published	86.64	16.16	+436%	1,309 of 1,312	RINA	B
2019	not published	83.56	17.32	+382%	1,308 of 1,321	RINA	B
2018	not published	124.04	17.14	+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.