Navalyze · Oil tanker · Ship

OTTOMANA

IMO: 9299214
Type: Oil tanker
Average cargo carried: 17,114 t
Flag (estimated): Malta
Port of registry: Valletta
Technical efficiency: EIV 8.63 g CO₂/t·nm

ISM company (DoC holder) in 2025: Mediterranea di Navigazione S.p.a

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 17,114 t of cargo on average.

Fuel kg/nm

84.5

Oil tanker median 129 kg/nm (−34%)

CO₂ per transport work (cargo)

15.7

g CO₂/t·nm · Oil tanker median 7.95 (+97%)

Average speed

11.5 kn

Oil tanker median 10.7 kn (+7%)

Fuel per day at sea

23.4 t/day

Fuel consumed

1,913 t

CO₂ emitted

6,066 t

6,160 t CO₂eq incl. CH₄ and N₂O

Distance sailed

22,648 nm

CO₂ ÷ CO₂ per mile

Time at sea

1,962 h

82 days, 22% of the year

Within the oil tanker fleet, 2025

Set against all 1,665 oil tanker 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 84.5 kg/nm · median 129 (−34%)

76.1Ranks 256 of 1,665, lowest first191

Average speedThis ship 11.5 kn · median 10.7 (+7%)

8.0Faster than 75% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 15.7 g CO₂/t·nm · median 7.95 (+97%)

4.51Ranks 1,314 of 1,665, lowest first27.7

Middle 80% of shipsMiddle 50%Oil tanker medianThis ship

Where the emissions happen, 2025

THETIS splits each ship's emissions 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 ports41%
From the EU41%
Into the EU8%
At berth in the EU10%

75% of this ship's CO₂ falls under the EU ETS (4,568 t).

Fuel burned laden

1,387 t

73% of all fuel; 28% in ballast or unladen

CO₂ at berth

585 t

9.7% of the ship's CO₂, alongside in EU ports

Methane (CH₄)

0.1 t

Mainly from LNG; small for oil, biofuel and methanol

CO₂eq uplift

+94 t

+1.5% CO₂eq on top of CO₂ alone, 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 kg/nm

OTTOMANA
Oil tanker median

75.0100.0125.0150.0175.0

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

Average speed, kn

OTTOMANA
Oil tanker median

4.06.08.010.012.014.0

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

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

OTTOMANA
Oil tanker median

5.010.015.020.0

’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	−1.3 kn	−5%	−14%	−47%	+2%	1.3 kn slower, fuel per mile down 5%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	+0.7 kn	+2%	+8%	+69%	+0%	0.7 kn faster, fuel per mile up 2%; better than speed alone explains (hull, engine or trade).
2022→2023	+0.0 kn	+10%	+10%	−8%	+2%	Same speed, fuel per mile up 10%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	+4.7 kn	−33%	+9%	+53%	−23%	4.7 kn faster, fuel per mile down 33%; better than speed alone explains (hull, engine or trade).
2020→2021	−3.2 kn	+32%	−7%	+7%	+67%	3.2 kn slower, fuel per mile up 32%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	+5.5 kn	−49%	+8%	+44%	−36%	5.5 kn faster, fuel per mile down 49%; better than speed alone explains (hull, engine or trade).
2018→2019	−1.1 kn	+63%	+33%	−49%	+2%	1.1 kn slower, fuel per mile up 63%; worse than speed alone explains (fouling, weather, loading 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	Mediterranea di Navigazione S.p.a	1,913	6,066	22,648	1,962	11.5	84.5	15.7	73%
2024	Mediterranea di Navigazione S.p.a	3,801	11,909	42,793	3,336	12.8	88.8	15.4	71%
2023	not published	2,205	6,906	25,360	2,092	12.1	87.0	15.3	–
2022	not published	2,182	6,846	27,602	2,273	12.1	79.1	15.0	–
2021	not published	2,136	6,675	18,047	2,436	7.4	118	19.6	–
2020	not published	1,508	4,763	16,807	1,585	10.6	89.7	11.7	–
2019	not published	2,038	6,377	11,667	2,309	5.1	175	18.3	–
2018	not published	2,433	7,602	22,752	3,664	6.2	107	18.0	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	Mediterranea di Navigazione S.p.a	15.7	7.95	+97%	1,314 of 1,665	ABS	A+B
2024	Mediterranea di Navigazione S.p.a	15.4	8.06	+91%	1,433 of 1,787	ABS	–
2023	not published	15.3	8.44	+82%	1,434 of 1,797	RINA	A
2022	not published	15.0	8.51	+76%	1,549 of 1,961	RINA	A
2021	not published	19.6	8.86	+121%	1,515 of 1,789	RINA	A
2020	not published	11.7	9.03	+30%	1,227 of 1,870	RINA	–
2019	not published	18.3	8.83	+107%	1,600 of 1,919	RINA	–
2018	not published	18.0	8.86	+103%	1,491 of 1,779	RINA	A+B

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.