Navalyze · Vehicle carrier · Ship

GEMINI LEADER

IMO: 9519121
Type: Vehicle carrier
Average cargo carried: 7,726 t
Port of registry: Panama
Technical efficiency: EEXI 13.60 g CO₂/t·nm
Fuel (estimated): Oil blended with biofuel or another alternative fuel
Former names: TRITON ACE

ISM company (DoC holder) in 2025: TRITON NAVIGATION B.V.

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 7,726 t of cargo on average.

Fuel kg/nm

104.0

Vehicle carrier median 99.9 kg/nm (+4%)

CO₂ per transport work (cargo)

41.52

g CO₂/t·nm · Vehicle carrier median 55.36 (−25%)

Average speed

15.2 kn

Vehicle carrier median 14.4 kn (+6%)

Fuel per day at sea

38.0 t/day

Fuel consumed

1,783 t

CO₂ emitted

5,501 t

5,588 t CO₂eq incl. CH₄ and N₂O

Distance sailed

17,147 nm

CO₂ ÷ CO₂ per mile

Time at sea

1,125 h

47 days, 13% of the year

Within the vehicle carrier fleet, 2025

Set against all 506 vehicle carrier 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 104.0 kg/nm · median 99.9 (+4%)

79.6Ranks 319 of 506, lowest first119.0

Average speedThis ship 15.2 kn · median 14.4 (+6%)

12.0Faster than 73% of vehicle carrier ships15.9

CO₂ per transport work (cargo)This ship 41.52 g CO₂/t·nm · median 55.36 (−25%)

34.70Ranks 110 of 506, lowest first158.48

Middle 80% of shipsMiddle 50%Vehicle carrier 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 ports2%
From the EU11%
Into the EU85%
At berth in the EU2%

42% of this ship's CO₂ falls under the EU ETS (2,290 t).

Fuel burned laden

–

Not reported

CO₂ at berth

84 t

1.5% of the ship's CO₂, alongside in EU ports

Methane (CH₄)

0.1 t

Mainly from LNG; small for oil, biofuel and methanol

CO₂eq uplift

+87 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 Vehicle carrier median is the middle ship of all vehicle carrier ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.

Fuel kg/nm

GEMINI LEADER
Vehicle carrier median

90.0100.0110.0120.0

’182018’192019’202020’212021’222022’232023’242024’252025

Average speed, kn

GEMINI LEADER
Vehicle carrier median

11.012.013.014.015.016.0

’182018’192019’202020’212021’222022’232023’242024’252025

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

GEMINI LEADER
Vehicle carrier median

40.060.080.0100120

’182018’192019’202020’212021’222022’232023’242024’252025

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	+0.0 kn	+11%	+11%	+37%	−54%	Same speed, fuel per mile up 11%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	+1.1 kn	−18%	−11%	+41%	+82%	1.1 kn faster, fuel per mile down 18%; better than speed alone explains (hull, engine or trade).
2022→2023	−1.3 kn	−1%	−9%	+7%	+2%	1.3 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	+1.0 kn	+4%	+12%	+78%	−31%	1.0 kn faster, fuel per mile up 4%; better than speed alone explains (hull, engine or trade).
2020→2021	+1.9 kn	+17%	+34%	−81%	+55%	1.9 kn faster, fuel per mile up 17%; better than speed alone explains (hull, engine or trade).
2019→2020	−1.0 kn	−10%	−16%	−17%	−28%	1.0 kn slower, fuel per mile down 10%; in line with the speed change.
2018→2019	+1.7 kn	+13%	+30%	+199%	−43%	1.7 kn faster, fuel per mile up 13%; 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	Hours at seah	Average speedknots at sea	Fuel kg/nmthis ship	CO₂ per transport work (cargo)g/t·nm, this ship	Laden fuel
2025Bio blend	TRITON NAVIGATION B.V.	1,783	5,501	17,147	1,125	15.2	104.0	41.52	–
2024	TRITON NAVIGATION B.V.	1,168	3,684	12,510	822	15.2	93.4	90.48	–
2023	not published	1,006	3,187	8,879	628	14.1	113.3	49.82	–
2022	not published	956	3,030	8,331	542	15.4	114.8	48.88	–
2021	not published	515	1,635	4,668	325	14.4	110.4	70.61	–
2020	not published	2,304	7,290	24,460	1,950	12.5	94.2	45.49	–
2019	not published	3,090	9,652	29,469	2,181	13.5	104.8	62.90	–
2018	not published	917	2,878	9,864	839	11.8	93.0	111.20	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Vehicle carrier median	vs Vehicle carrier	Rank	Verifier	Methods
2025Bio blend	TRITON NAVIGATION B.V.	41.52	55.36	−25%	110 of 506	DNV	B+C
2024	TRITON NAVIGATION B.V.	90.48	55.31	+64%	273 of 335	DNV	B+C
2023	not published	49.82	56.64	−12%	145 of 417	DNV	B+C
2022	not published	48.88	57.66	−15%	149 of 463	DNV	C
2021	not published	70.61	59.57	+19%	305 of 459	DNV	C
2020	not published	45.49	57.26	−21%	97 of 449	DNV	C
2019	not published	62.90	58.95	+7%	245 of 426	DNV	C
2018	not published	111.20	91.03	+22%	158 of 260	ABS	C

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Vehicle carrier 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 vehicle carrier 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.