Navalyze · Oil tanker · Ship

OHIO

IMO: 9417440
Type: Oil tanker
Average cargo carried: 38,891 t
Flag (estimated): Bahamas
Port of registry: Nassau
Technical efficiency: EEXI 3.45 g CO₂/t·nm

ISM company (DoC holder) in 2025: Dorian (Hellas) S.A.

Report year

2021 at a glance

From the 2021 THETIS-MRV report. Carries about 42,133 t of cargo on average.

Fuel kg/nm

169

Oil tanker median 129 kg/nm (+31%)

CO₂ per transport work (cargo)

12.7

g CO₂/t·nm · Oil tanker median 8.86 (+43%)

Average speed

8.4 kn

Oil tanker median 10.7 kn (−21%)

Fuel per day at sea

34.0 t/day

Fuel consumed

6,707 t

CO₂ emitted

21,230 t

Distance sailed

39,768 nm

CO₂ ÷ CO₂ per mile

Time at sea

4,731 h

197 days, 54% 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 138 kg/nm · median 129 (+7%)

76.1Ranks 1,006 of 1,665, lowest first191

Average speedThis ship 10.3 kn · median 10.7 (−4%)

8.0Faster than 37% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 11.2 g CO₂/t·nm · median 7.95 (+41%)

4.51Ranks 1,169 of 1,665, lowest first27.7

Middle 80% of shipsMiddle 50%Oil tanker 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 ports8%
From the EU35%
Into the EU43%
At berth in the EU14%

Fuel burned laden

3,421 t

51% of all fuel; 49% in ballast or unladen

CO₂ at berth

2,928 t

13.8% 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 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

OHIO
Oil tanker median

120.0140.0160.0180.0200.0

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

Average speed, kn

OHIO
Oil tanker median

4.06.08.010.012.0

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

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

OHIO
Oil tanker median

6.08.010.012.014.016.0

’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	−14%	−2%	+49%	+4%	1.3 kn faster, fuel per mile down 14%; better than speed alone explains (hull, engine or trade).
2023→2024	−0.9 kn	−3%	−11%	+4%	+9%	0.9 kn slower, fuel per mile down 3%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	+0.6 kn	+4%	+10%	−12%	−22%	0.6 kn faster, fuel per mile up 4%; better than speed alone explains (hull, engine or trade).
2021→2022	+0.9 kn	−6%	+4%	+14%	−1%	0.9 kn faster, fuel per mile down 6%; better than speed alone explains (hull, engine or trade).
2020→2021	+1.1 kn	+7%	+22%	+3%	−5%	1.1 kn faster, fuel per mile up 7%; better than speed alone explains (hull, engine or trade).
2019→2020	+0.8 kn	−21%	−11%	+46%	+2%	0.8 kn faster, fuel per mile down 21%; better than speed alone explains (hull, engine or trade).
2018→2019	+1.6 kn	+3%	+39%	−23%	−15%	1.6 kn faster, fuel per mile up 3%; 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	Dorian (Hellas) S.A.	8,505	26,956	61,667	6,008	10.3	138	11.2	–
2024	Dorian (Hellas) S.A.	6,642	20,811	41,412	4,593	9.0	160	10.8	–
2023	not published	6,599	20,659	39,932	4,046	9.9	165	9.89	–
2022	not published	7,232	22,609	45,378	4,902	9.3	159	12.6	46%
2021	not published	6,707	21,230	39,768	4,731	8.4	169	12.7	51%
2020	not published	6,124	19,403	38,682	5,271	7.3	158	13.4	–
2019	not published	5,311	16,635	26,567	4,092	6.5	200	13.1	–
2018	not published	6,690	20,897	34,587	7,130	4.9	193	15.3	75%

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	Dorian (Hellas) S.A.	11.2	7.95	+41%	1,169 of 1,665	DNV	A+B+C
2024	Dorian (Hellas) S.A.	10.8	8.06	+34%	1,237 of 1,787	DNV	A+B+C
2023	not published	9.89	8.44	+17%	1,094 of 1,797	DNV	A+B+C
2022	not published	12.6	8.51	+48%	1,424 of 1,961	ABS	A+B
2021	not published	12.7	8.86	+43%	1,270 of 1,789	ABS	A+B
2020	not published	13.4	9.03	+48%	1,331 of 1,870	ABS	A+B
2019	not published	13.1	8.83	+48%	1,405 of 1,919	ABS	A+B
2018	not published	15.3	8.86	+72%	1,407 of 1,779	ABS	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.