Navalyze · Oil tanker · Ship

HELLAS TATIANA

IMO: 9794719
Type: Oil tanker
Average cargo carried: 20,782 t
Port of registry: Majuro
Technical efficiency: EEDI 4.96 g CO₂/t·nm

ISM company (DoC holder) in 2025: Latsco Marine Management Inc. · part of Latsco

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 20,782 t of cargo on average.

Fuel per mile

79.2 kg/nm

Oil tanker median 128.5 kg/nm (−38%)

CO₂ per transport work (cargo)

11.89

g CO₂/t·nm · Oil tanker median 7.95 (+50%)

Average speed

12.3 kn

Oil tanker median 10.7 kn (+15%)

Fuel per day at sea

23.4 t/day

Fuel consumed

545 t

CO₂ emitted

1,699 t

1,726 t CO₂eq incl. CH₄ and N₂O

Distance sailed

6,877 nm

CO₂ ÷ CO₂ per mile

Time at sea

558 h

23 days, 6% 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 per mileThis ship 79.2 kg/nm · median 128.5 (−38%)

76.1Ranks 205 of 1,665, lowest first190.8

Average speedThis ship 12.3 kn · median 10.7 (+15%)

8.0Faster than 94% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 11.89 g CO₂/t·nm · median 7.95 (+50%)

4.51Ranks 1,195 of 1,665, lowest first27.66

Middle 80% of shipsMiddle 50%Oil tanker medianThis ship

Where the emissions happen, 2025

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 ports0%
From the EU44%
Into the EU49%
At berth in the EU7%

54% of this ship's CO₂ falls under the EU ETS (912 t).

Fuel burned laden

49%

51% in ballast or unladen

CO₂ at berth

7.4%

Alongside in EU ports

Methane (CH₄)

0.0 t

Mainly from LNG; small for oil

CO₂eq ÷ CO₂

1.016

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

HELLAS TATIANA
Oil tanker median

60.080.0100.0120.0140.0

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

Average speed, kn

HELLAS TATIANA
Oil tanker median

9.010.011.012.013.0

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

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

HELLAS TATIANA
Oil tanker median

5.010.015.020.025.0

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

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2023→2025	−0.5 kn	+11%	+7%	−70%	+4%	0.5 kn slower, fuel per mile up 11%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	+1.1 kn	−19%	−12%	+36%	−40%	1.1 kn faster, fuel per mile down 19%; better than speed alone explains (hull, engine or trade).
2021→2022	−0.7 kn	+10%	+5%	+84%	+128%	0.7 kn slower, fuel per mile up 10%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	−0.2 kn	+1%	−0%	−51%	−12%	Same speed, fuel per mile flat.
2019→2020	−0.3 kn	+12%	+9%	+12%	−60%	0.3 kn slower, fuel per mile up 12%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	+0.6 kn	−8%	−4%	−63%	+104%	0.6 kn faster, fuel per mile down 8%; 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	At sea h	Speed kn	Fuel kg/nm	CO₂ g/t·nm	Laden fuel
2025	Latsco Marine Management Inc.	545	1,699	6,877	558	12.3	79.2	11.89	49%
2023	not published	1,644	5,162	23,087	1,800	12.8	71.2	11.43	77%
2022	not published	1,497	4,736	16,972	1,447	11.7	88.2	18.98	39%
2021	not published	737	2,333	9,229	747	12.4	79.9	8.34	85%
2020	not published	1,482	4,690	18,824	1,494	12.6	78.8	9.51	–
2019	not published	1,179	3,715	16,761	1,296	12.9	70.4	23.54	–
2018	not published	3,471	10,860	45,230	3,673	12.3	76.8	11.56	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	Latsco Marine Management Inc.	11.89	7.95	+50%	1,195 of 1,665	ABS	A+C
2023	not published	11.43	8.44	+35%	1,258 of 1,797	ABS	A+C
2022	not published	18.98	8.51	+123%	1,671 of 1,961	ABS	A+C
2021	not published	8.34	8.86	−6%	819 of 1,789	ABS	A+B+C
2020	not published	9.51	9.03	+5%	991 of 1,870	ABS	A+B+C
2019	not published	23.54	8.83	+167%	1,698 of 1,919	ABS	A+B+C
2018	not published	11.56	8.86	+30%	1,194 of 1,779	ABS	A+B+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.