Navalyze · Vehicle carrier · Ship

NEPTUNE PHOS

IMO: 9451719
Type: Vehicle carrier
Average cargo carried: 2,172 t
Flag (estimated): Greece
Port of registry: Piraeus
Technical efficiency: EEXI 19.00 g CO₂/t·nm
Former names: MONZA EXPRESS

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

Report year

2021 at a glance

From the 2021 THETIS-MRV report. Carries about 1,409 t of cargo on average.

Fuel kg/nm

78.6

Vehicle carrier median 103 kg/nm (−24%)

CO₂ per transport work (cargo)

177

g CO₂/t·nm · Vehicle carrier median 59.6 (+196%)

Average speed

12.5 kn

Vehicle carrier median 14.4 kn (−13%)

Fuel per day at sea

23.6 t/day

Fuel consumed

3,703 t

CO₂ emitted

11,724 t

Distance sailed

47,116 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,772 h

157 days, 43% 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 kg/nmThis ship 75.0 kg/nm · median 99.9 (−25%)

79.6Ranks 30 of 506, lowest first119

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

12.0Faster than 17% of vehicle carrier ships15.9

CO₂ per transport work (cargo)This ship 108 g CO₂/t·nm · median 55.4 (+95%)

34.7Ranks 429 of 506, lowest first158

Middle 80% of shipsMiddle 50%Vehicle carrier medianThis ship

Where the emissions happen, 2021

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 ports58%
From the EU18%
Into the EU18%
At berth in the EU6%

Fuel burned laden

–

Not reported

CO₂ at berth

761 t

6.5% of the ship's CO₂, alongside in EU ports

Methane (CH₄)

–

Mainly from LNG; small for oil, biofuel and methanol

CO₂eq uplift

–

CO₂eq on top of CO₂ alone, from CH₄ and N₂O

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 kg/nm

NEPTUNE PHOS
Vehicle carrier median

70.080.090.0100.0110.0120.0

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

Average speed, kn

NEPTUNE PHOS
Vehicle carrier median

11.012.013.014.015.0

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

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

NEPTUNE PHOS
Vehicle carrier median

50.0100150200

’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	+0.0 kn	−8%	−8%	+10%	+40%	Same speed, fuel per mile down 8%; better than speed alone explains (hull, engine or trade).
2023→2024	+1.0 kn	−0%	+8%	−8%	−7%	1.0 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2022→2023	+0.0 kn	+9%	+8%	+119%	+8%	Same speed, fuel per mile up 9%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	−0.7 kn	−5%	−10%	−39%	−57%	0.7 kn slower, fuel per mile down 5%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	−0.7 kn	−10%	−14%	−2%	+77%	0.7 kn slower, fuel per mile down 10%; in line with the speed change.
2019→2020	−0.3 kn	−7%	−10%	−36%	−8%	0.3 kn slower, fuel per mile down 7%; in line with the speed change.
2018→2019	+2.3 kn	−15%	+2%	+13%	−28%	2.3 kn faster, fuel per mile down 15%; 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	Neptune Lines Shipping and Managing Enterprises SA	4,825	15,089	64,343	5,030	12.8	75.0	108	–
2024	Neptune Lines Shipping and Managing Enterprises SA	4,736	14,774	58,327	4,562	12.8	81.2	77.2	–
2023	not published	5,158	16,100	63,389	5,359	11.8	81.4	82.7	–
2022	not published	2,168	6,843	28,940	2,445	11.8	74.9	76.3	–
2021	not published	3,703	11,724	47,116	3,772	12.5	78.6	177	–
2020	not published	4,179	13,072	47,844	3,637	13.2	87.3	99.8	–
2019	not published	7,016	21,885	74,422	5,502	13.5	94.3	108	–
2018	not published	7,343	22,909	66,069	5,879	11.2	111	150	–

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	108	55.4	+95%	429 of 506	DNV	A+B+C
2024	Neptune Lines Shipping and Managing Enterprises SA	77.2	55.3	+40%	248 of 335	DNV	A+B+C
2023	not published	82.7	56.6	+46%	343 of 417	DNV	A+B+C
2022	not published	76.3	57.7	+32%	334 of 463	DNV	A
2021	not published	177	59.6	+196%	433 of 459	RINA	B
2020	not published	99.8	57.3	+74%	379 of 449	RINA	B
2019	not published	108	59.0	+83%	369 of 426	RINA	B
2018	not published	150	62.4	+140%	394 of 434	Lloyd's Register	B

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.