Navalyze · Vehicle carrier · Ship

NEPTUNE THALASSA

IMO: 9668506
Type: Vehicle carrier
Average cargo carried: 3,262 t
Port of registry: Piraeus
Technical efficiency: EEXI 16.96 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 3,262 t of cargo on average.

Fuel per mile

66.6 kg/nm

Vehicle carrier median 99.9 kg/nm (−33%)

CO₂ per transport work (cargo)

63.84

g CO₂/t·nm · Vehicle carrier median 55.36 (+15%)

Average speed

12.8 kn

Vehicle carrier median 14.4 kn (−11%)

Fuel per day at sea

20.5 t/day

Fuel consumed

4,400 t

CO₂ emitted

13,757 t

13,973 t CO₂eq incl. CH₄ and N₂O

Distance sailed

66,061 nm

CO₂ ÷ CO₂ per mile

Time at sea

5,156 h

215 days, 59% 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 66.6 kg/nm · median 99.9 (−33%)

79.6Ranks 15 of 506, lowest first119.0

Average speedThis ship 12.8 kn · median 14.4 (−11%)

12.0Faster than 18% of vehicle carrier ships15.9

CO₂ per transport work (cargo)This ship 63.84 g CO₂/t·nm · median 55.36 (+15%)

34.70Ranks 301 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 ports31%
From the EU28%
Into the EU35%
At berth in the EU5%

68% of this ship's CO₂ falls under the EU ETS (9,380 t).

Fuel burned laden

–

Not reported

CO₂ at berth

5.3%

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 THALASSA
Vehicle carrier median

60.080.0100.0120.0

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

Average speed, kn

NEPTUNE THALASSA
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 THALASSA
Vehicle carrier median

50.060.070.080.090.0

’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	−1.2 kn	−2%	−11%	+4%	+4%	1.2 kn slower, fuel per mile down 2%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	+1.7 kn	−6%	+7%	+8%	−8%	1.7 kn faster, fuel per mile down 6%; better than speed alone explains (hull, engine or trade).
2022→2023	−1.0 kn	+5%	−3%	−9%	−2%	1.0 kn slower, fuel per mile up 5%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	−0.1 kn	+4%	+3%	−4%	−11%	Same speed, fuel per mile up 4%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+1.2 kn	−3%	+6%	+12%	+11%	1.2 kn faster, fuel per mile down 3%; better than speed alone explains (hull, engine or trade).
2019→2020	+0.0 kn	−11%	−11%	+4%	−11%	Same speed, fuel per mile down 11%; better than speed alone explains (hull, engine or trade).
2018→2019	−0.3 kn	−1%	−3%	−12%	−12%	0.3 kn slower, fuel per mile flat.

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	4,400	13,757	66,061	5,156	12.8	66.6	63.84	–
2024	Neptune Lines Shipping and Managing Enterprises SA	4,331	13,504	63,404	4,514	14.0	68.3	61.62	–
2023	not published	4,295	13,400	58,810	4,788	12.3	73.0	67.24	–
2022	not published	4,511	14,077	64,941	4,899	13.3	69.5	68.34	–
2021	not published	4,510	14,073	67,544	5,048	13.4	66.8	76.51	–
2020	not published	4,158	12,977	60,474	4,940	12.2	68.8	68.65	–
2019	not published	4,484	13,995	58,006	4,771	12.2	77.3	77.42	–
2018	not published	5,143	16,048	66,105	5,271	12.5	77.8	88.11	–

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	63.84	55.36	+15%	301 of 506	DNV	A+B+C
2024	Neptune Lines Shipping and Managing Enterprises SA	61.62	55.31	+11%	196 of 335	DNV	A+B+C
2023	not published	67.24	56.64	+19%	286 of 417	DNV	A+B+C
2022	not published	68.34	57.66	+19%	301 of 463	DNV	A
2021	not published	76.51	59.57	+28%	332 of 459	DNV	A
2020	not published	68.65	57.26	+20%	299 of 449	DNV	A
2019	not published	77.42	58.95	+31%	316 of 426	DNV	A
2018	not published	88.11	62.35	+41%	327 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.