Navalyze · Oil tanker · Ship

CHRYSALIS

IMO: 9437684
Type: Oil tanker
Average cargo carried: 94,292 t
Port of registry: Monrovia
Technical efficiency: EEXI 3.29 g CO₂/t·nm

ISM company (DoC holder) in 2025: STEALTH MARITIME CORP. S.A.

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 94,292 t of cargo on average.

Fuel per mile

170.9 kg/nm

Oil tanker median 128.5 kg/nm (+33%)

CO₂ per transport work (cargo)

5.71

g CO₂/t·nm · Oil tanker median 7.95 (−28%)

Average speed

11.0 kn

Oil tanker median 10.7 kn (+3%)

Fuel per day at sea

45.3 t/day

Fuel consumed

752 t

CO₂ emitted

2,370 t

2,407 t CO₂eq incl. CH₄ and N₂O

Distance sailed

4,402 nm

CO₂ ÷ CO₂ per mile

Time at sea

399 h

17 days, 5% 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 170.9 kg/nm · median 128.5 (+33%)

76.1Ranks 1,374 of 1,665, lowest first190.8

Average speedThis ship 11.0 kn · median 10.7 (+3%)

8.0Faster than 60% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 5.71 g CO₂/t·nm · median 7.95 (−28%)

4.51Ranks 386 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 EU14%
Into the EU83%
At berth in the EU3%

52% of this ship's CO₂ falls under the EU ETS (1,223 t).

Fuel burned laden

–

Not reported

CO₂ at berth

3.2%

Alongside in EU ports

Methane (CH₄)

0.0 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

CHRYSALIS
Oil tanker median

100.0200.0300.0400.0

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

Average speed, kn

CHRYSALIS
Oil tanker median

6.08.010.012.0

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

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

CHRYSALIS
Oil tanker median

4.06.08.010.012.0

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

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2024→2025	−0.1 kn	−13%	−13%	−53%	−15%	Same speed, fuel per mile down 13%; better than speed alone explains (hull, engine or trade).
2023→2024	+0.1 kn	−3%	−3%	−28%	−10%	Same speed, fuel per mile down 3%; better than speed alone explains (hull, engine or trade).
2022→2023	−0.7 kn	+32%	+25%	−52%	−6%	0.7 kn slower, fuel per mile up 32%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	+4.8 kn	−61%	−33%	+5,477%	–	4.8 kn faster, fuel per mile down 61%; better than speed alone explains (hull, engine or trade).
2020→2021	−4.0 kn	+129%	+44%	−97%	–	4.0 kn slower, fuel per mile up 129%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	+1.4 kn	+9%	+25%	−20%	−6%	1.4 kn faster, fuel per mile up 9%; better than speed alone explains (hull, engine or trade).
2018→2019	+0.2 kn	−18%	−15%	+11%	−28%	Same speed, fuel per mile down 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	At sea h	Speed kn	Fuel kg/nm	CO₂ g/t·nm	Laden fuel
2025	STEALTH MARITIME CORP. S.A.	752	2,370	4,402	399	11.0	170.9	5.71	–
2024	STEALTH MARITIME CORP. S.A.	1,839	5,845	9,378	844	11.1	196.1	6.74	–
2023	not published	2,645	8,382	13,013	1,182	11.0	203.2	7.48	–
2022	not published	4,141	13,166	26,937	2,304	11.7	153.7	7.99	–
2021	not published	188	604	483	70	6.9	390.2	–	–
2020	not published	2,500	7,917	14,661	1,348	10.9	170.5	7.05	–
2019	not published	2,873	9,052	18,415	1,941	9.5	156.0	7.47	–
2018	not published	3,140	9,893	16,606	1,793	9.3	189.1	10.41	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	STEALTH MARITIME CORP. S.A.	5.71	7.95	−28%	386 of 1,665	DNV	B+C
2024	STEALTH MARITIME CORP. S.A.	6.74	8.06	−16%	620 of 1,787	DNV	A
2023	not published	7.48	8.44	−11%	742 of 1,797	DNV	A
2022	not published	7.99	8.51	−6%	892 of 1,961	DNV	A
2021	not published	–	–	–	–	DNV	A
2020	not published	7.05	9.03	−22%	580 of 1,870	DNV	A
2019	not published	7.47	8.83	−15%	714 of 1,919	DNV	A
2018	not published	10.41	8.86	+17%	1,080 of 1,779	DNV	A

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.