Navalyze · Ro-ro · Ship

NEPTUNE LEADER

IMO: 9402744
Type: Ro-ro ship
Port of registry: Panama
Technical efficiency: EEDI 23.15 g CO₂/t·nm
Former names: MV NEPTUNE LEADER

ISM company (DoC holder) in 2024: SANDIGAN SHIP SERVICES, INC.

Report year

2024 at a glance

From the 2024 THETIS-MRV report.

Fuel per mile

78.5 kg/nm

CO₂ per transport work (cargo)

–

g CO₂/t·nm

Average speed

15.1 kn

Fuel per day at sea

28.4 t/day

Fuel consumed

1,612 t

CO₂ emitted

5,086 t

5,165 t CO₂eq incl. CH₄ and N₂O

Distance sailed

20,526 nm

CO₂ ÷ CO₂ per mile

Time at sea

1,363 h

57 days, 16% of the year

Within the ro-ro fleet, 2022

Set against all 223 ro-ro ships with a full-year 2022 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 89.9 kg/nm · median 110.3 (−18%)

63.6Ranks 52 of 223, lowest first146.3

Average speedThis ship 16.5 kn · median 14.6 (+13%)

11.4Faster than 77% of ro-ro ships17.1

CO₂ per transport work (cargo)This ship 63.46 g CO₂/t·nm · median 90.62 (−30%)

50.21Ranks 42 of 223, lowest first280.22

Middle 80% of shipsMiddle 50%Ro-ro medianThis ship

Where the emissions happen, 2024

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 ports10%
From the EU76%
Into the EU14%
At berth in the EU0%

0% of this ship's CO₂ falls under the EU ETS (0 t).

Fuel burned laden

–

Not reported

CO₂ at berth

0.0%

Alongside in EU ports

Methane (CH₄)

0.1 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 LEADER
Ro-ro median

70.080.090.0100.0110.0120.0

’212021’222022’242024

Average speed, kn

NEPTUNE LEADER
Ro-ro median

12.014.016.018.0

’212021’222022’242024

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2022→2024	−1.4 kn	−13%	−20%	+154%	–	1.4 kn slower, fuel per mile down 13%; in line with the speed change.
2021→2022	+4.3 kn	+24%	+67%	−16%	–	4.3 kn faster, fuel per mile up 24%; 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
2024	SANDIGAN SHIP SERVICES, INC.	1,612	5,086	20,526	1,363	15.1	78.5	–	–
2022	not published	726	2,288	8,071	489	16.5	89.9	63.46	–
2021	not published	695	2,191	9,581	784	12.2	72.5	1,385.81	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Ro-ro median	vs Ro-ro	Rank	Verifier	Methods
2024	SANDIGAN SHIP SERVICES, INC.	–	–	–	–	ClassNK	C
2022	not published	63.46	90.62	−30%	42 of 223	ClassNK	A+B
2021	not published	–	–	–	–	ClassNK	A+B

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.