Navalyze · Chemical tanker · Ship

SEAVEN VOYAGER

IMO: 9405796
Type: Chemical tanker
Average cargo carried: 3,140 t
Flag (estimated): Greece
Port of registry: Piraeus
Technical efficiency: EEXI 15.85 g CO₂/t·nm

ISM company (DoC holder) in 2025: Seaven Tanker Management Inc

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 3,140 t of cargo on average.

Fuel kg/nm

38.9

Chemical tanker median 79.7 kg/nm (−51%)

CO₂ per transport work (cargo)

39.3

g CO₂/t·nm · Chemical tanker median 15.0 (+161%)

Average speed

9.5 kn

Chemical tanker median 11.1 kn (−14%)

Fuel per day at sea

8.9 t/day

Fuel consumed

1,112 t

CO₂ emitted

3,525 t

3,580 t CO₂eq incl. CH₄ and N₂O

Distance sailed

28,600 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,006 h

125 days, 34% of the year

Within the chemical tanker fleet, 2025

Set against all 1,460 chemical 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 38.9 kg/nm · median 79.7 (−51%)

52.8Ranks 16 of 1,460, lowest first111

Average speedThis ship 9.5 kn · median 11.1 (−14%)

8.8Faster than 17% of chemical tanker ships12.4

CO₂ per transport work (cargo)This ship 39.3 g CO₂/t·nm · median 15.0 (+161%)

7.93Ranks 1,305 of 1,460, lowest first40.2

Middle 80% of shipsMiddle 50%Chemical 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 ports40%
From the EU19%
Into the EU18%
At berth in the EU23%

77% of this ship's CO₂ falls under the EU ETS (2,700 t).

Fuel burned laden

–

Not reported

CO₂ at berth

795 t

22.5% 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

+55 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 Chemical tanker median is the middle ship of all chemical tanker ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.

Fuel kg/nm

SEAVEN VOYAGER
Chemical tanker median

20.040.060.080.0100.0

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

Average speed, kn

SEAVEN VOYAGER
Chemical tanker median

6.08.010.012.0

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

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

SEAVEN VOYAGER
Chemical tanker median

0.020.040.060.0

’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	+0.1 kn	−14%	−12%	−19%	+1%	Same speed, fuel per mile down 14%; better than speed alone explains (hull, engine or trade).
2023→2024	+2.5 kn	−14%	+16%	+98%	−26%	2.5 kn faster, fuel per mile down 14%; better than speed alone explains (hull, engine or trade).
2022→2023	−4.5 kn	+7%	−35%	−46%	−8%	4.5 kn slower, fuel per mile up 7%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	+0.5 kn	+26%	+31%	−28%	+27%	0.5 kn faster, fuel per mile up 26%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+1.3 kn	−12%	+0%	+2%	−8%	1.3 kn faster, fuel per mile down 12%; better than speed alone explains (hull, engine or trade).
2019→2020	+2.0 kn	−12%	+11%	+0%	+23%	2.0 kn faster, fuel per mile down 12%; better than speed alone explains (hull, engine or trade).
2018→2019	+1.1 kn	+18%	+37%	+31%	+8%	1.1 kn faster, fuel per mile up 18%; 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
2025	Seaven Tanker Management Inc	1,112	3,525	28,600	3,006	9.5	38.9	39.3	–
2024	Seaven Tanker Management Inc	1,580	4,975	35,098	3,747	9.4	45.0	39.0	–
2023	not published	929	2,949	17,713	2,574	6.9	52.5	52.8	–
2022	not published	1,622	5,151	33,055	2,900	11.4	49.0	57.6	–
2021	not published	1,788	5,709	45,783	4,217	10.9	39.0	45.3	–
2020	not published	1,992	6,381	44,784	4,668	9.6	44.5	49.3	–
2019	not published	2,253	7,112	44,658	5,897	7.6	50.5	40.2	–
2018	not published	1,464	4,641	34,132	5,233	6.5	42.9	37.2	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Chemical tanker median	vs Chemical tanker	Rank	Verifier	Methods
2025	Seaven Tanker Management Inc	39.3	15.0	+161%	1,305 of 1,460	Bureau Veritas	A
2024	Seaven Tanker Management Inc	39.0	16.7	+133%	1,110 of 1,274	Bureau Veritas	A
2023	not published	52.8	16.2	+225%	1,244 of 1,314	Bureau Veritas	A
2022	not published	57.6	16.1	+259%	1,370 of 1,409	Bureau Veritas	A
2021	not published	45.3	16.7	+172%	1,240 of 1,343	Bureau Veritas	A
2020	not published	49.3	16.2	+205%	1,239 of 1,312	Bureau Veritas	A
2019	not published	40.2	17.3	+132%	1,165 of 1,321	Bureau Veritas	A
2018	not published	37.2	17.1	+117%	1,102 of 1,294	EUROCERT S.A	–

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Chemical 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 chemical 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.