Navalyze · Chemical tanker · Ship

ESSEX STAR

IMO: 9348297
Type: Chemical tanker
Average cargo carried: 7,627 t
Port of registry: Valletta
Technical efficiency: EEXI 8.76 g CO₂/t·nm
Ice class: IA
Former names: PATRAS

ISM company (DoC holder) in 2025: ESSEX STAR SHIPPING LTD

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 7,627 t of cargo on average.

Fuel per mile

107.8 kg/nm

Chemical tanker median 79.7 kg/nm (+35%)

CO₂ per transport work (cargo)

45.33

g CO₂/t·nm · Chemical tanker median 15.04 (+201%)

Average speed

9.1 kn

Chemical tanker median 11.1 kn (−18%)

Fuel per day at sea

23.4 t/day

Fuel consumed

2,659 t

CO₂ emitted

8,526 t

8,657 t CO₂eq incl. CH₄ and N₂O

Distance sailed

24,660 nm

CO₂ ÷ CO₂ per mile

Time at sea

2,723 h

113 days, 31% 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 per mileThis ship 107.8 kg/nm · median 79.7 (+35%)

52.8Ranks 1,280 of 1,460, lowest first111.0

Average speedThis ship 9.1 kn · median 11.1 (−18%)

8.8Faster than 12% of chemical tanker ships12.4

CO₂ per transport work (cargo)This ship 45.33 g CO₂/t·nm · median 15.04 (+201%)

7.93Ranks 1,356 of 1,460, lowest first40.17

Middle 80% of shipsMiddle 50%Chemical 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 ports45%
From the EU20%
Into the EU20%
At berth in the EU14%

80% of this ship's CO₂ falls under the EU ETS (6,809 t).

Fuel burned laden

55%

45% in ballast or unladen

CO₂ at berth

14.5%

Alongside in EU ports

Methane (CH₄)

0.1 t

Mainly from LNG; small for oil

CO₂eq ÷ CO₂

1.015

Uplift 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 per mile, kg/nm

ESSEX STAR
Chemical tanker median

70.080.090.0100.0110.0

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

Average speed, kn

ESSEX STAR
Chemical tanker median

6.08.010.012.014.0

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

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

ESSEX STAR
Chemical tanker median

10.020.030.040.050.060.0

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

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2024→2025	−1.1 kn	+18%	+4%	−28%	+1%	1.1 kn slower, fuel per mile up 18%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	−0.2 kn	−4%	−6%	+36%	+2%	Same speed, fuel per mile down 4%; in line with the speed change.
2022→2023	−1.8 kn	+16%	−1%	−3%	+13%	1.8 kn slower, fuel per mile up 16%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	+2.8 kn	−10%	+17%	−20%	−5%	2.8 kn faster, fuel per mile down 10%; better than speed alone explains (hull, engine or trade).
2020→2021	−0.7 kn	−14%	−20%	+24%	+1%	0.7 kn slower, fuel per mile down 14%; in line with the speed change.
2019→2020	+3.8 kn	+18%	+90%	+0%	+30%	3.8 kn faster, fuel per mile up 18%; better than speed alone explains (hull, engine or trade).
2018→2019	−0.1 kn	+5%	+2%	+17%	−42%	Same speed, fuel per mile up 5%; 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	At sea h	Speed kn	Fuel kg/nm	CO₂ g/t·nm	Laden fuel
2025	ESSEX STAR SHIPPING LTD	2,659	8,526	24,660	2,723	9.1	107.8	45.33	55%
2024	ESSEX STAR SHIPPING LTD	3,155	10,116	34,434	3,370	10.2	91.6	44.95	50%
2023	not published	2,412	7,732	25,297	2,425	10.4	95.3	43.87	47%
2022	not published	2,151	6,897	26,163	2,142	12.2	82.2	38.89	25%
2021	not published	2,984	9,545	32,792	3,471	9.4	91.0	41.04	42%
2020	not published	2,810	8,962	26,448	2,619	10.1	106.2	40.75	–
2019	not published	2,364	7,492	26,344	4,210	6.3	89.7	31.24	–
2018	not published	1,925	6,111	22,445	3,497	6.4	85.8	53.68	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Chemical tanker median	vs Chemical tanker	Rank	Verifier	Methods
2025	ESSEX STAR SHIPPING LTD	45.33	15.04	+201%	1,356 of 1,460	ABS	A
2024	ESSEX STAR SHIPPING LTD	44.95	16.73	+169%	1,170 of 1,274	ABS	A
2023	not published	43.87	16.23	+170%	1,185 of 1,314	ABS	B
2022	not published	38.89	16.06	+142%	1,247 of 1,409	ABS	B
2021	not published	41.04	16.69	+146%	1,209 of 1,343	ABS	B
2020	not published	40.75	16.16	+152%	1,179 of 1,312	Swiss Climate	A
2019	not published	31.24	17.32	+80%	1,055 of 1,321	Swiss Climate	A
2018	not published	53.68	17.14	+213%	1,216 of 1,294	Swiss Climate	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.