Navalyze · Container · Ship

NYK ROMULUS

IMO: 9416989
Type: Container ship
Average cargo carried: 31,213 t
Port of registry: Singapore
Technical efficiency: EEXI 12.40 g CO₂/t·nm

ISM company (DoC holder) in 2025: NYK SHIPMANAGEMENT PTE LTD · part of NYK

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 31,213 t of cargo on average.

Fuel per mile

169.4 kg/nm

Container median 177.0 kg/nm (−4%)

CO₂ per transport work (cargo)

17.06

g CO₂/t·nm · Container median 16.30 (+5%)

Average speed

13.4 kn

Container median 13.3 kn (+1%)

Fuel per day at sea

54.5 t/day

Fuel consumed

3,798 t

CO₂ emitted

11,936 t

12,123 t CO₂eq incl. CH₄ and N₂O

Distance sailed

22,416 nm

CO₂ ÷ CO₂ per mile

Time at sea

1,674 h

70 days, 19% of the year

Within the container fleet, 2025

Set against all 2,208 container 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 169.4 kg/nm · median 177.0 (−4%)

78.8Ranks 1,060 of 2,208, lowest first302.4

Average speedThis ship 13.4 kn · median 13.3 (+1%)

9.1Faster than 51% of container ships16.0

CO₂ per transport work (cargo)This ship 17.06 g CO₂/t·nm · median 16.30 (+5%)

7.22Ranks 1,161 of 2,208, lowest first46.89

Middle 80% of shipsMiddle 50%Container 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 ports13%
From the EU76%
Into the EU5%
At berth in the EU6%

59% of this ship's CO₂ falls under the EU ETS (7,101 t).

Fuel burned laden

–

Not reported

CO₂ at berth

5.9%

Alongside in EU ports

Methane (CH₄)

0.2 t

Mainly from LNG; small for oil, biofuel and methanol

CO₂eq ÷ CO₂

1.016

Uplift from CH₄ and N₂O, counted in full from 2026

Over the years

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

Fuel per mile, kg/nm

NYK ROMULUS
Container median

140.0160.0180.0200.0220.0

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

Average speed, kn

NYK ROMULUS
Container median

10.012.014.016.018.0

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

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

NYK ROMULUS
Container median

16.018.020.022.0

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

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2024→2025	+2.8 kn	−3%	+23%	+41%	–	2.8 kn faster, fuel per mile down 3%; better than speed alone explains (hull, engine or trade).
2023→2024	−2.2 kn	+10%	−9%	−16%	–	2.2 kn slower, fuel per mile up 10%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	+2.1 kn	−14%	+3%	+24%	+3%	2.1 kn faster, fuel per mile down 14%; better than speed alone explains (hull, engine or trade).
2021→2022	−5.9 kn	−10%	−42%	−15%	−11%	5.9 kn slower, fuel per mile down 10%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+1.7 kn	+16%	+29%	−49%	+9%	1.7 kn faster, fuel per mile up 16%; better than speed alone explains (hull, engine or trade).
2019→2020	−0.8 kn	−4%	−9%	−6%	−17%	0.8 kn slower, fuel per mile down 4%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	−0.4 kn	−3%	−5%	−18%	+6%	0.4 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	NYK SHIPMANAGEMENT PTE LTD	3,798	11,936	22,416	1,674	13.4	169.4	17.06	–
2024	NYK SHIPMANAGEMENT PTE LTD	2,759	8,726	15,871	1,493	10.6	173.8	–	–
2023	not published	2,978	9,462	18,816	1,465	12.8	158.3	17.71	–
2022	not published	2,782	8,839	15,142	1,413	10.7	183.7	17.16	–
2021	not published	3,625	11,524	17,758	1,072	16.6	204.1	19.25	–
2020	not published	6,128	19,423	34,766	2,331	14.9	176.2	17.63	–
2019	not published	6,756	21,213	36,965	2,348	15.7	182.8	21.24	–
2018	not published	8,536	26,833	45,340	2,816	16.1	188.3	20.13	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Container median	vs Container	Rank	Verifier	Methods
2025	NYK SHIPMANAGEMENT PTE LTD	17.06	16.30	+5%	1,161 of 2,208	ClassNK	B+C
2024	NYK SHIPMANAGEMENT PTE LTD	–	–	–	–	ClassNK	C
2023	not published	17.71	19.40	−9%	858 of 1,899	ClassNK	C
2022	not published	17.16	19.13	−10%	825 of 1,825	ClassNK	C
2021	not published	19.25	17.90	+8%	951 of 1,781	ClassNK	C
2020	not published	17.63	17.58	+0%	904 of 1,797	ClassNK	C
2019	not published	21.24	18.88	+13%	1,012 of 1,788	ClassNK	C
2018	not published	20.13	20.22	−0%	849 of 1,705	ClassNK	C

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