Navalyze · Oil tanker · Ship

FRONT SAVANNAH

IMO: 9831828
Type: Oil tanker
Average cargo carried: 75,180 t
Flag (estimated): Hong Kong (China)
Port of registry: Hong Kong
Technical efficiency: EEXI 2.82 g CO₂/t·nm

ISM company (DoC holder) in 2025: Sea 23 Leasing Co Ltd

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 75,180 t of cargo on average.

Fuel kg/nm

126

Oil tanker median 129 kg/nm (−2%)

CO₂ per transport work (cargo)

5.23

g CO₂/t·nm · Oil tanker median 7.95 (−34%)

Average speed

11.4 kn

Oil tanker median 10.7 kn (+7%)

Fuel per day at sea

34.4 t/day

Fuel consumed

5,668 t

CO₂ emitted

17,721 t

17,999 t CO₂eq incl. CH₄ and N₂O

Distance sailed

45,069 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,952 h

165 days, 45% 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 126 kg/nm · median 129 (−2%)

76.1Ranks 783 of 1,665, lowest first191

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

8.0Faster than 71% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 5.23 g CO₂/t·nm · median 7.95 (−34%)

4.51Ranks 298 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 ports0%
From the EU32%
Into the EU61%
At berth in the EU8%

54% of this ship's CO₂ falls under the EU ETS (9,527 t).

Fuel burned laden

–

Not reported

CO₂ at berth

1,334 t

7.5% of the ship's CO₂, alongside in EU ports

Methane (CH₄)

0.3 t

Mainly from LNG; small for oil, biofuel and methanol

CO₂eq uplift

+278 t

+1.6% 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

FRONT SAVANNAH
Oil tanker median

120.0140.0160.0180.0

’192019’202020’222022’232023’242024’252025

Average speed, kn

FRONT SAVANNAH
Oil tanker median

9.010.011.012.013.0

’192019’202020’222022’232023’242024’252025

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

FRONT SAVANNAH
Oil tanker median

2.04.06.08.010.0

’192019’202020’222022’232023’242024’252025

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	+0.1 kn	−22%	−21%	+38%	−13%	Same speed, fuel per mile down 22%; better than speed alone explains (hull, engine or trade).
2023→2024	+0.1 kn	+11%	+11%	−32%	+17%	Same speed, fuel per mile up 11%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	−1.1 kn	−9%	−17%	+298%	+23%	1.1 kn slower, fuel per mile down 9%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2022	−0.5 kn	−10%	−13%	−48%	+8%	0.5 kn slower, fuel per mile down 10%; in line with the speed change.
2019→2020	+2.6 kn	+6%	+34%	+97%	−18%	2.6 kn faster, fuel per mile up 6%; better than speed alone explains (hull, engine or trade).

Part-year reports are left out of these comparisons. 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	Sea 23 Leasing Co Ltd	5,668	17,721	45,069	3,952	11.4	126	5.23	–
2024part-year	Hai Kuo Shipping 1971T Ltd	4,466	13,995	27,322	2,428	11.3	164	6.69	–
2024	Sea 23 Leasing Co Ltd	5,255	16,460	32,646	2,887	11.3	161	5.98	–
2023	not published	6,944	21,714	47,696	4,248	11.2	146	5.13	–
2022	not published	1,912	5,959	11,984	973	12.3	160	4.16	–
2020	not published	4,035	12,600	22,830	1,778	12.8	177	3.84	–
2019	not published	1,935	6,049	11,606	1,143	10.2	167	4.67	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	Sea 23 Leasing Co Ltd	5.23	7.95	−34%	298 of 1,665	DNV	A
2024part-year	Hai Kuo Shipping 1971T Ltd	–	–	–	–	DNV	A
2024	Sea 23 Leasing Co Ltd	5.98	8.06	−26%	470 of 1,787	DNV	A
2023	not published	5.13	8.44	−39%	244 of 1,797	DNV	B
2022	not published	4.16	8.51	−51%	102 of 1,961	DNV	B
2020	not published	3.84	9.03	−57%	107 of 1,870	ABS	B
2019	not published	4.67	8.83	−47%	200 of 1,919	ABS	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.