Navalyze · Vehicle carrier · Ship

NEPTUNE HORIZON

IMO: 9451721
Type: Vehicle carrier
Average cargo carried: 2,756 t
Port of registry: Valletta
Technical efficiency: EEXI 19.00 g CO₂/t·nm

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 2,756 t of cargo on average.

Fuel per mile

77.7 kg/nm

Vehicle carrier median 99.9 kg/nm (−22%)

CO₂ per transport work (cargo)

88.32

g CO₂/t·nm · Vehicle carrier median 55.36 (+60%)

Average speed

12.0 kn

Vehicle carrier median 14.4 kn (−17%)

Fuel per day at sea

22.3 t/day

Fuel consumed

4,304 t

CO₂ emitted

13,489 t

13,701 t CO₂eq incl. CH₄ and N₂O

Distance sailed

55,418 nm

CO₂ ÷ CO₂ per mile

Time at sea

4,631 h

193 days, 53% of the year

Within the vehicle carrier fleet, 2025

Set against all 506 vehicle carrier 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 77.7 kg/nm · median 99.9 (−22%)

79.6Ranks 44 of 506, lowest first119.0

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

12.0Faster than 10% of vehicle carrier ships15.9

CO₂ per transport work (cargo)This ship 88.32 g CO₂/t·nm · median 55.36 (+60%)

34.70Ranks 386 of 506, lowest first158.48

Middle 80% of shipsMiddle 50%Vehicle carrier 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 ports35%
From the EU23%
Into the EU35%
At berth in the EU7%

71% of this ship's CO₂ falls under the EU ETS (9,572 t).

Fuel burned laden

–

Not reported

CO₂ at berth

7.4%

Alongside in EU ports

Methane (CH₄)

0.2 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 Vehicle carrier median is the middle ship of all vehicle carrier 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 HORIZON
Vehicle carrier median

70.080.090.0100.0110.0

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

Average speed, kn

NEPTUNE HORIZON
Vehicle carrier median

12.013.014.015.0

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

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

NEPTUNE HORIZON
Vehicle carrier median

40.060.080.0100120140

’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	−0.4 kn	−12%	−15%	−8%	−17%	0.4 kn slower, fuel per mile down 12%; better than speed alone explains (hull, engine or trade).
2023→2024	−1.8 kn	−1%	−14%	−20%	+14%	1.8 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	+0.4 kn	+5%	+8%	−12%	−10%	0.4 kn faster, fuel per mile up 5%; in line with the speed change.
2021→2022	+1.4 kn	+9%	+21%	+67%	−17%	1.4 kn faster, fuel per mile up 9%; better than speed alone explains (hull, engine or trade).
2020→2021	+0.1 kn	+2%	+3%	−10%	+39%	Same speed, fuel per mile up 2%; in line with the speed change.
2019→2020	+0.1 kn	−7%	−7%	−25%	−12%	Same speed, fuel per mile down 7%; better than speed alone explains (hull, engine or trade).
2018→2019	−0.3 kn	−3%	−5%	+8%	+4%	0.3 kn slower, fuel per mile down 3%; in line with the speed change.

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	4,304	13,489	55,418	4,631	12.0	77.7	88.32	–
2024	Neptune Lines Shipping and Managing Enterprises SA	5,334	16,672	60,542	4,891	12.4	88.1	106.44	–
2023	not published	6,754	21,051	75,683	5,338	14.2	89.2	93.26	–
2022	not published	7,303	22,769	85,955	6,226	13.8	85.0	103.30	–
2021	not published	4,008	12,519	51,332	4,134	12.4	78.1	125.05	–
2020	not published	4,374	13,676	57,187	4,647	12.3	76.5	90.16	–
2019	not published	6,282	19,598	76,077	6,226	12.2	82.6	102.54	–
2018	not published	6,032	18,818	70,530	5,660	12.5	85.5	98.87	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Vehicle carrier median	vs Vehicle carrier	Rank	Verifier	Methods
2025	Neptune Lines Shipping and Managing Enterprises SA	88.32	55.36	+60%	386 of 506	DNV	A+B+C
2024	Neptune Lines Shipping and Managing Enterprises SA	106.44	55.31	+92%	284 of 335	DNV	A+B+C
2023	not published	93.26	56.64	+65%	359 of 417	DNV	A+B+C
2022	not published	103.30	57.66	+79%	399 of 463	DNV	A
2021	not published	125.05	59.57	+110%	417 of 459	DNV	A
2020	not published	90.16	57.26	+57%	362 of 449	DNV	A
2019	not published	102.54	58.95	+74%	363 of 426	DNV	A
2018	not published	98.87	62.35	+59%	345 of 434	DNV	A

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Vehicle carrier 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 vehicle carrier 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.