Navalyze · Oil tanker · Ship

FRONT SAVANNAH

IMO: 9831828
Type: Oil tanker
Average cargo carried: 75,180 t
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 per mile

125.8 kg/nm

Oil tanker median 128.5 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 per mileThis ship 125.8 kg/nm · median 128.5 (−2%)

76.1Ranks 783 of 1,665, lowest first190.8

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 first27.66

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 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

7.5%

Alongside in EU ports

Methane (CH₄)

0.3 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

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	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	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	At sea h	Speed kn	Fuel kg/nm	CO₂ g/t·nm	Laden fuel
2025	Sea 23 Leasing Co Ltd	5,668	17,721	45,069	3,952	11.4	125.8	5.23	–
2024part-year	Hai Kuo Shipping 1971T Ltd	4,466	13,995	27,322	2,428	11.3	163.5	6.69	–
2024	Sea 23 Leasing Co Ltd	5,255	16,460	32,646	2,887	11.3	161.0	5.98	–
2023	not published	6,944	21,714	47,696	4,248	11.2	145.6	5.13	–
2022	not published	1,912	5,959	11,984	973	12.3	159.6	4.16	–
2020	not published	4,035	12,600	22,830	1,778	12.8	176.7	3.84	–
2019	not published	1,935	6,049	11,606	1,143	10.2	166.7	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.