Navalyze · Oil tanker · Ship

OTTOMAN SINCERITY

IMO: 9788710
Type: Oil tanker
Average cargo carried: 78,704 t
Flag (estimated): Turkiye
Port of registry: Istanbul
Technical efficiency: EEXI 2.72 g CO₂/t·nm

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

Report year

2018 at a glance

From the 2018 THETIS-MRV report. Carries about 55,595 t of cargo on average.

Fuel kg/nm

121

Oil tanker median 140 kg/nm (−13%)

CO₂ per transport work (cargo)

6.81

g CO₂/t·nm · Oil tanker median 8.86 (−23%)

Average speed

9.7 kn

Oil tanker median 9.8 kn (−1%)

Fuel per day at sea

28.0 t/day

Fuel consumed

4,818 t

CO₂ emitted

15,069 t

Distance sailed

39,801 nm

CO₂ ÷ CO₂ per mile

Time at sea

4,123 h

172 days, 47% 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 153 kg/nm · median 129 (+19%)

76.1Ranks 1,224 of 1,665, lowest first191

Average speedThis ship 11.4 kn · median 10.7 (+7%)

8.0Faster than 73% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 6.09 g CO₂/t·nm · median 7.95 (−23%)

4.51Ranks 466 of 1,665, lowest first27.7

Middle 80% of shipsMiddle 50%Oil tanker medianThis ship

Where the emissions happen, 2018

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 ports34%
From the EU21%
Into the EU35%
At berth in the EU10%

Fuel burned laden

–

Not reported

CO₂ at berth

1,551 t

10.3% 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 SINCERITY
Oil tanker median

120.0140.0160.0180.0200.0

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

Average speed, kn

OTTOMAN SINCERITY
Oil tanker median

6.08.010.012.0

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

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

OTTOMAN SINCERITY
Oil tanker median

5.010.015.020.025.030.0

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

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2023→2025	+1.3 kn	+10%	+24%	+742%	−76%	1.3 kn faster, fuel per mile up 10%; better than speed alone explains (hull, engine or trade).
2022→2023	+3.9 kn	−16%	+36%	−26%	+7%	3.9 kn faster, fuel per mile down 16%; better than speed alone explains (hull, engine or trade).
2021→2022	−4.8 kn	−11%	−49%	−84%	+257%	4.8 kn slower, fuel per mile down 11%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+0.8 kn	+42%	+53%	+102%	+13%	0.8 kn faster, fuel per mile up 42%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	+1.8 kn	+8%	+31%	−48%	−20%	1.8 kn faster, fuel per mile up 8%; better than speed alone explains (hull, engine or trade).
2018→2019	−1.3 kn	+1%	−12%	−32%	+7%	1.3 kn slower, fuel per mile flat; 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.	4,177	13,068	27,263	2,384	11.4	153	6.09	–
2023	not published	452	1,415	3,237	320	10.1	140	25.1	–
2022	not published	734	2,306	4,394	705	6.2	167	23.4	–
2021	not published	5,280	16,500	28,257	2,570	11.0	187	6.55	–
2020	not published	1,843	5,763	13,967	1,369	10.2	132	5.78	–
2019	not published	3,297	10,314	26,894	3,216	8.4	123	7.26	–
2018	not published	4,818	15,069	39,801	4,123	9.7	121	6.81	–

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.	6.09	7.95	−23%	466 of 1,665	DNV	B+C
2023	not published	25.1	8.44	+198%	1,612 of 1,797	DNV	B+C
2022	not published	23.4	8.51	+175%	1,741 of 1,961	DNV	B+C
2021	not published	6.55	8.86	−26%	510 of 1,789	DNV	C
2020	not published	5.78	9.03	−36%	331 of 1,870	DNV	C
2019	not published	7.26	8.83	−18%	666 of 1,919	DNV	C
2018	not published	6.81	8.86	−23%	546 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.