Navalyze · Gas carrier (LPG) · Ship

OPTIMUS

IMO: 9870472
Type: Gas carrier
Average cargo carried: 1,620 t
Flag (estimated): Latvia
Port of registry: Riga
Technical efficiency: EEXI 24.36 g CO₂/t·nm
Ice class: IA
Fuel (estimated): Mostly LNG

ISM company (DoC holder) in 2025: SIA TB Marine Shipmanagement (Riga)

Report year

2022 at a glance

From the 2022 THETIS-MRV report.

Fuel kg/nm

99.5

LNG carrier median 252 kg/nm (−61%)

CO₂ per transport work (volume)

122

g CO₂/m³·nm · LNG carrier median 10.4 (+1,074%)

Average speed

5.6 kn

LNG carrier median 14.1 kn (−60%)

Fuel per day at sea

13.4 t/day

Fuel consumed

1,083 t

CO₂ emitted

3,136 t

Distance sailed

10,876 nm

CO₂ ÷ CO₂ per mile

Time at sea

1,941 h

81 days, 22% of the year

Within the gas carrier (LPG) fleet, 2025

Set against all 355 gas carrier (LPG) 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 54.8 kg/nm · median 81.5 (−33%)

49.8Ranks 50 of 355, lowest first124

Average speedThis ship 7.4 kn · median 12.6 (−41%)

8.8Faster than 4% of gas carrier (LPG) ships14.6

CO₂ per transport work (cargo)This ship 94.0 g CO₂/t·nm · median 35.6 (+164%)

14.4Ranks 291 of 355, lowest first120

Middle 80% of shipsMiddle 50%Gas carrier (LPG) medianThis ship

Where the emissions happen, 2022

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 ports50%
From the EU0%
Into the EU0%
At berth in the EU50%

Fuel burned laden

–

Not reported

CO₂ at berth

1,571 t

50.1% of the ship's CO₂, alongside in EU ports

Methane (CH₄)

–

Mainly from LNG; small for oil, biofuel and methanol

CO₂eq uplift

–

CO₂eq on top of CO₂ alone, from CH₄ and N₂O

Over the years

Full-year reports only. The Gas carrier (LPG) median is the middle ship of all gas carrier (LPG) ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.

Fuel kg/nm

OPTIMUS
Gas carrier (LPG) median

0.0100.0200.0300.0

’212021’222022’232023’242024’252025

Average speed, kn

OPTIMUS
Gas carrier (LPG) median

5.07.510.012.515.0

’212021’222022’232023’242024’252025

CO₂ per transport work (volume), g CO₂/m³·nm

OPTIMUS
Gas carrier (LPG) median

0.050.0100150

’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	−0.2 kn	+11%	+8%	+1%	−7%	Same speed, fuel per mile up 11%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	+0.5 kn	−10%	−3%	+22%	−20%	0.5 kn faster, fuel per mile down 10%; better than speed alone explains (hull, engine or trade).
2022→2023	+1.5 kn	−45%	−30%	+136%	+3%	1.5 kn faster, fuel per mile down 45%; better than speed alone explains (hull, engine or trade).
2021→2022	−2.5 kn	−1%	−31%	+448%	–	2.5 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading 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
2025LNG	SIA TB Marine Shipmanagement (Riga)	1,739	4,832	31,720	4,272	7.4	54.8	94.0	–
2024LNG	SIA TB Marine Shipmanagement (Riga)	1,554	4,301	31,379	4,116	7.6	49.5	101	–
2023LNG / alt.	not published	1,414	3,993	25,634	3,615	7.1	55.1	126	–
2022LNG / alt.	not published	1,083	3,136	10,876	1,941	5.6	99.5	–	–
2021LNG / alt.	not published	199	571	1,983	246	8.1	101	–	29%

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Gas carrier (LPG) median	vs Gas carrier (LPG)	Rank	Verifier	Methods
2025LNG	SIA TB Marine Shipmanagement (Riga)	94.0	35.6	+164%	291 of 355	DNV	C
2024LNG	SIA TB Marine Shipmanagement (Riga)	101	35.8	+183%	261 of 306	DNV	C
2023LNG / alt.	not published	126	41.8	+202%	295 of 330	DNV	C
2022LNG / alt.	not published	122	10.4	+1,074%	373 of 379	DNV	B+C
2021LNG / alt.	not published	–	–	–	–	Bureau Veritas	B+C

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Gas carrier (LPG) 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 gas carrier (LPG) 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.