Navalyze · Ro-ro · Ship

NEPTUNE AEGLI

IMO: 9240964
Type: Ro-ro ship
Average cargo carried: 1,156 t
Port of registry: Valletta
Technical efficiency: EEXI 20.14 g CO₂/t·nm
Ice class: IC

ISM company (DoC holder) in 2025: Neptune Lines Shipping and Managing Enterprises SA

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 1,156 t of cargo on average.

Fuel per mile

101.2 kg/nm

Ro-ro median 104.6 kg/nm (−3%)

CO₂ per transport work (cargo)

276

g CO₂/t·nm · Ro-ro median 95.19 (+190%)

Average speed

12.0 kn

Ro-ro median 14.4 kn (−17%)

Fuel per day at sea

29.1 t/day

Fuel consumed

5,633 t

CO₂ emitted

17,741 t

18,018 t CO₂eq incl. CH₄ and N₂O

Distance sailed

55,668 nm

CO₂ ÷ CO₂ per mile

Time at sea

4,652 h

194 days, 53% of the year

Within the ro-ro fleet, 2025

Set against all 235 ro-ro 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 101.2 kg/nm · median 104.6 (−3%)

56.6Ranks 107 of 235, lowest first145.3

Average speedThis ship 12.0 kn · median 14.4 (−17%)

10.9Faster than 19% of ro-ro ships17.0

CO₂ per transport work (cargo)This ship 275.66 g CO₂/t·nm · median 95.19 (+190%)

47.35Ranks 207 of 235, lowest first297.27

Middle 80% of shipsMiddle 50%Ro-ro 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 ports52%
From the EU21%
Into the EU20%
At berth in the EU7%

80% of this ship's CO₂ falls under the EU ETS (14,148 t).

Fuel burned laden

–

Not reported

CO₂ at berth

7.2%

Alongside in EU ports

Methane (CH₄)

0.3 t

Mainly from LNG; small for oil

CO₂eq ÷ CO₂

1.016

Uplift from CH₄ and N₂O, counted in full from 2026

Over the years

Full-year reports only. The Ro-ro median is the middle ship of all ro-ro ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.

Fuel per mile, kg/nm

NEPTUNE AEGLI
Ro-ro median

90.095.0100.0105.0110.0115.0

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

Average speed, kn

NEPTUNE AEGLI
Ro-ro median

8.010.012.014.016.0

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

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

NEPTUNE AEGLI
Ro-ro median

0.0100200300400500

’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	+0.6 kn	−4%	+1%	−12%	+11%	0.6 kn faster, fuel per mile down 4%; better than speed alone explains (hull, engine or trade).
2023→2024	+0.8 kn	+10%	+19%	−14%	−21%	0.8 kn faster, fuel per mile up 10%; better than speed alone explains (hull, engine or trade).
2022→2023	−1.6 kn	+3%	−10%	+5%	+9%	1.6 kn slower, fuel per mile up 3%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	+0.6 kn	−1%	+4%	−3%	−29%	0.6 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2020→2021	+0.4 kn	−5%	−1%	+4%	+47%	0.4 kn faster, fuel per mile down 5%; better than speed alone explains (hull, engine or trade).
2019→2020	+2.2 kn	+2%	+26%	+13%	−14%	2.2 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2018→2019	−2.2 kn	−0%	−19%	−20%	+11%	2.2 kn slower, fuel per mile flat; 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	At sea h	Speed kn	Fuel kg/nm	CO₂ g/t·nm	Laden fuel
2025	Neptune Lines Shipping and Managing Enterprises SA	5,633	17,741	55,668	4,652	12.0	101.2	275.66	–
2024	Neptune Lines Shipping and Managing Enterprises SA	6,676	20,986	63,525	5,553	11.4	105.1	248.28	–
2023	not published	7,075	22,078	74,005	6,988	10.6	95.6	312.56	–
2022	not published	6,500	20,320	70,208	5,755	12.2	92.6	285.65	–
2021	not published	6,750	21,095	72,491	6,238	11.6	93.1	401.74	–
2020	not published	6,813	21,301	69,443	6,212	11.2	98.1	273.83	–
2019	not published	5,936	18,637	61,656	6,816	9.0	96.3	317.95	–
2018	not published	7,437	23,375	77,113	6,910	11.2	96.4	286.09	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Ro-ro median	vs Ro-ro	Rank	Verifier	Methods
2025	Neptune Lines Shipping and Managing Enterprises SA	275.66	95.19	+190%	207 of 235	DNV	B+C
2024	Neptune Lines Shipping and Managing Enterprises SA	248.28	97.53	+155%	184 of 220	DNV	A+B+C
2023	not published	312.56	108.62	+188%	195 of 221	DNV	A+B+C
2022	not published	285.65	90.62	+215%	203 of 223	DNV	A
2021	not published	401.74	103.64	+288%	211 of 219	DNV	A
2020	not published	273.83	57.26	+378%	436 of 449	DNV	A
2019	not published	317.95	90.89	+250%	249 of 271	DNV	A
2018	not published	286.09	91.03	+214%	244 of 260	DNV	A

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Ro-ro 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 ro-ro 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.