Navalyze · Oil tanker · Ship

DUCHESS OF DORIA

IMO: 9403346
Type: Oil tanker
Average cargo carried: 19,188 t
Port of registry: Majuro
Technical efficiency: EIV 7.26 g CO₂/t·nm
Former names: CELSIUS RIMINI

ISM company (DoC holder) in 2024: Celsius Tech Limited

Report year

2024 at a glance

From the 2024 THETIS-MRV report. Carries about 19,188 t of cargo on average.

Fuel per mile

75.9 kg/nm

Oil tanker median 129.0 kg/nm (−41%)

CO₂ per transport work (cargo)

12.50

g CO₂/t·nm · Oil tanker median 8.06 (+55%)

Average speed

12.2 kn

Oil tanker median 10.9 kn (+12%)

Fuel per day at sea

22.2 t/day

Fuel consumed

1,170 t

CO₂ emitted

3,699 t

3,756 t CO₂eq incl. CH₄ and N₂O

Distance sailed

15,422 nm

CO₂ ÷ CO₂ per mile

Time at sea

1,265 h

53 days, 14% of the year

Within the oil tanker fleet, 2024

Set against all 1,787 oil tanker ships with a full-year 2024 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 75.9 kg/nm · median 129.0 (−41%)

79.5Ranks 145 of 1,787, lowest first193.6

Average speedThis ship 12.2 kn · median 10.9 (+12%)

8.1Faster than 88% of oil tanker ships12.3

CO₂ per transport work (cargo)This ship 12.50 g CO₂/t·nm · median 8.06 (+55%)

4.44Ranks 1,344 of 1,787, lowest first25.70

Middle 80% of shipsMiddle 50%Oil tanker 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 ports7%
From the EU43%
Into the EU49%
At berth in the EU0%

31% of this ship's CO₂ falls under the EU ETS (1,132 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

1.015

Uplift from CH₄ and N₂O, counted in full from 2026

Over the years

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

Fuel per mile, kg/nm

DUCHESS OF DORIA
Oil tanker median

60.080.0100.0120.0140.0

’192019’202020’212021’232023’242024

Average speed, kn

DUCHESS OF DORIA
Oil tanker median

9.010.011.012.013.014.0

’192019’202020’212021’232023’242024

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

DUCHESS OF DORIA
Oil tanker median

7.510.012.515.017.5

’192019’202020’212021’232023’242024

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2023→2024	+1.4 kn	−17%	−6%	−6%	+12%	1.4 kn faster, fuel per mile down 17%; better than speed alone explains (hull, engine or trade).
2021→2023	−1.7 kn	+15%	−2%	+94%	−33%	1.7 kn slower, fuel per mile up 15%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+0.0 kn	−12%	−11%	−68%	+68%	Same speed, fuel per mile down 12%; better than speed alone explains (hull, engine or trade).
2019→2020	−1.1 kn	−10%	−18%	+10%	−9%	1.1 kn slower, fuel per mile down 10%; worse than speed alone explains (fouling, weather, loading or trade).

Part-year reports are left out of these comparisons. 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
2024part-year	Celsius Tech Limited	541	1,707	7,261	590	12.3	74.5	–	–
2024	FLEET MANAGEMENT LIMITED	1,170	3,699	15,422	1,265	12.2	75.9	12.50	–
2023	not published	1,504	4,766	16,366	1,521	10.8	91.9	11.16	–
2021	not published	677	2,136	8,444	674	12.5	80.2	16.78	–
2020	not published	2,376	7,475	26,178	2,095	12.5	90.8	9.96	–
2019	not published	2,407	7,554	23,847	1,747	13.6	101.0	10.99	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2024part-year	Celsius Tech Limited	–	–	–	–	ClassNK	C
2024	FLEET MANAGEMENT LIMITED	12.50	8.06	+55%	1,344 of 1,787	ClassNK	C
2023	not published	11.16	8.44	+32%	1,229 of 1,797	ClassNK	C
2021	not published	16.78	8.86	+89%	1,440 of 1,789	ClassNK	C
2020	not published	9.96	9.03	+10%	1,045 of 1,870	ClassNK	C
2019	not published	10.99	8.83	+24%	1,263 of 1,919	ClassNK	C

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Oil tanker 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 oil tanker 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.