Navalyze · Oil tanker · Ship

OTTOMAN INTEGRITY

IMO: 9530618
Type: Oil tanker
Average cargo carried: 51,324 t
Flag (estimated): Turkiye
Port of registry: Istanbul
Technical efficiency: EEXI 2.90 g CO₂/t·nm

ISM company (DoC holder) in 2025: Gungen Denizcilik ve Ticaret A.S.

Report year

2021 at a glance

From the 2021 THETIS-MRV report. Carries about 65,579 t of cargo on average.

Fuel kg/nm

199

Oil tanker median 129 kg/nm (+54%)

CO₂ per transport work (cargo)

9.50

g CO₂/t·nm · Oil tanker median 8.86 (+7%)

Average speed

8.5 kn

Oil tanker median 10.7 kn (−21%)

Fuel per day at sea

40.5 t/day

Fuel consumed

4,061 t

CO₂ emitted

12,736 t

Distance sailed

20,443 nm

CO₂ ÷ CO₂ per mile

Time at sea

2,409 h

100 days, 28% 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 167 kg/nm · median 129 (+30%)

76.1Ranks 1,357 of 1,665, lowest first191

Average speedThis ship 11.1 kn · median 10.7 (+4%)

8.0Faster than 62% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 10.2 g CO₂/t·nm · median 7.95 (+29%)

4.51Ranks 1,082 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 EU41%
Into the EU33%
At berth in the EU18%

Fuel burned laden

–

Not reported

CO₂ at berth

2,301 t

18.1% 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

OTTOMAN INTEGRITY
Oil tanker median

100.0150.0200.0250.0300.0

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

Average speed, kn

OTTOMAN INTEGRITY
Oil tanker median

8.09.010.011.012.0

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

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

OTTOMAN INTEGRITY
Oil tanker median

4.06.08.010.012.0

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

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	+0.0 kn	+8%	+8%	+99%	+15%	Same speed, fuel per mile up 8%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2024	+1.1 kn	−6%	+4%	−11%	−18%	1.1 kn faster, fuel per mile down 6%; better than speed alone explains (hull, engine or trade).
2021→2022	+1.5 kn	−17%	−2%	+61%	+14%	1.5 kn faster, fuel per mile down 17%; better than speed alone explains (hull, engine or trade).
2020→2021	−2.2 kn	−23%	−39%	+224%	+17%	2.2 kn slower, fuel per mile down 23%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	+0.7 kn	+29%	+39%	−23%	+42%	0.7 kn faster, fuel per mile up 29%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	+0.8 kn	+30%	+41%	−79%	−12%	0.8 kn faster, fuel per mile up 30%; 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	Gungen Denizcilik ve Ticaret A.S.	9,713	30,490	58,015	5,226	11.1	167	10.2	–
2024	Gungen Denizcilik ve Ticaret A.S.	4,502	14,134	29,104	2,624	11.1	155	8.92	–
2022	not published	5,432	16,786	32,842	3,296	10.0	165	10.8	–
2021	not published	4,061	12,736	20,443	2,409	8.5	199	9.50	–
2020	not published	1,634	5,127	6,314	591	10.7	259	8.11	–
2019	not published	1,650	5,150	8,240	828	10.0	200	5.71	–
2018	not published	6,169	19,291	40,109	4,382	9.2	154	6.49	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	Gungen Denizcilik ve Ticaret A.S.	10.2	7.95	+29%	1,082 of 1,665	DNV	B+C
2024	Gungen Denizcilik ve Ticaret A.S.	8.92	8.06	+11%	1,035 of 1,787	DNV	B+C
2022	not published	10.8	8.51	+27%	1,290 of 1,961	DNV	B+C
2021	not published	9.50	8.86	+7%	986 of 1,789	DNV	C
2020	not published	8.11	9.03	−10%	785 of 1,870	DNV	C
2019	not published	5.71	8.83	−35%	367 of 1,919	DNV	C
2018	not published	6.49	8.86	−27%	496 of 1,779	DNV	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.