Navalyze · Oil tanker · Ship

SUMMIT SPIRIT

IMO: 9404833
Type: Oil tanker
Average cargo carried: 66,496 t
Port of registry: Nassau
Technical efficiency: EEXI 2.81 g CO₂/t·nm

ISM company (DoC holder) in 2025: Teekay Marine (Singapore) Pte. Ltd.

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 66,496 t of cargo on average.

Fuel per mile

160.6 kg/nm

Oil tanker median 128.5 kg/nm (+25%)

CO₂ per transport work (cargo)

7.52

g CO₂/t·nm · Oil tanker median 7.95 (−5%)

Average speed

10.1 kn

Oil tanker median 10.7 kn (−6%)

Fuel per day at sea

38.8 t/day

Fuel consumed

4,302 t

CO₂ emitted

13,397 t

13,609 t CO₂eq incl. CH₄ and N₂O

Distance sailed

26,792 nm

CO₂ ÷ CO₂ per mile

Time at sea

2,659 h

111 days, 30% 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 160.6 kg/nm · median 128.5 (+25%)

76.1Ranks 1,300 of 1,665, lowest first190.8

Average speedThis ship 10.1 kn · median 10.7 (−6%)

8.0Faster than 32% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 7.52 g CO₂/t·nm · median 7.95 (−5%)

4.51Ranks 744 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 ports24%
From the EU29%
Into the EU39%
At berth in the EU8%

61% of this ship's CO₂ falls under the EU ETS (8,194 t).

Fuel burned laden

–

Not reported

CO₂ at berth

7.8%

Alongside in EU ports

Methane (CH₄)

0.2 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

SUMMIT SPIRIT
Oil tanker median

125.0150.0175.0200.0225.0

’182018’192019’202020’212021’232023’242024’252025

Average speed, kn

SUMMIT SPIRIT
Oil tanker median

6.08.010.012.0

’182018’192019’202020’212021’232023’242024’252025

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

SUMMIT SPIRIT
Oil tanker median

0.010.020.030.040.0

’182018’192019’202020’212021’232023’242024’252025

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2024→2025	−1.2 kn	+24%	+10%	+185%	+12%	1.2 kn slower, fuel per mile up 24%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	+0.3 kn	−31%	−29%	−40%	+41%	0.3 kn faster, fuel per mile down 31%; better than speed alone explains (hull, engine or trade).
2021→2023	+4.5 kn	−5%	+61%	+40%	−8%	4.5 kn faster, fuel per mile down 5%; better than speed alone explains (hull, engine or trade).
2020→2021	−1.4 kn	+10%	−9%	−47%	−3%	1.4 kn slower, fuel per mile up 10%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	−1.0 kn	+0%	−11%	−23%	−29%	1.0 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	−0.4 kn	−14%	−18%	−22%	−80%	0.4 kn slower, fuel per mile down 14%; 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	Teekay Marine (Singapore) Pte. Ltd.	4,302	13,397	26,792	2,659	10.1	160.6	7.52	–
2024	Teekay Marine (Singapore) Pte. Ltd.	1,224	3,821	9,415	834	11.3	129.9	6.70	–
2023	not published	2,953	9,210	15,719	1,424	11.0	187.9	4.76	–
2021	not published	2,225	7,006	11,199	1,724	6.5	198.7	5.18	–
2020	not published	3,822	11,934	21,231	2,684	7.9	180.0	5.34	–
2019	not published	4,968	15,540	27,634	3,115	8.9	179.8	7.55	–
2018	not published	7,437	23,223	35,579	3,838	9.3	209.0	38.17	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	Teekay Marine (Singapore) Pte. Ltd.	7.52	7.95	−5%	744 of 1,665	DNV	A+B+C
2024	Teekay Marine (Singapore) Pte. Ltd.	6.70	8.06	−17%	608 of 1,787	DNV	A+B+C
2023	not published	4.76	8.44	−44%	176 of 1,797	DNV	B+C
2021	not published	5.18	8.86	−42%	256 of 1,789	DNV	B+C
2020	not published	5.34	9.03	−41%	262 of 1,870	DNV	B+C
2019	not published	7.55	8.83	−14%	729 of 1,919	DNV	B+C
2018	not published	38.17	8.86	+331%	1,703 of 1,779	DNV	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.