Navalyze · Chemical tanker · Ship

HELEN

IMO: 9263136
Type: Chemical tanker
Average cargo carried: 9,776 t
Flag (estimated): Panama
Port of registry: Panama
Technical efficiency: EEXI 7.55 g CO₂/t·nm
Former names: CHEMBULK KOBE, MT CARP, GABY

ISM company (DoC holder) in 2025: Ocean Express Shipping Company Limited

Report year

2023 at a glance

From the 2023 THETIS-MRV report. Carries about 12,887 t of cargo on average.

Fuel kg/nm

65.3

Chemical tanker median 81.9 kg/nm (−20%)

CO₂ per transport work (cargo)

15.8

g CO₂/t·nm · Chemical tanker median 16.2 (−3%)

Average speed

11.3 kn

Chemical tanker median 11.2 kn (+1%)

Fuel per day at sea

17.7 t/day

Fuel consumed

682 t

CO₂ emitted

2,127 t

Distance sailed

10,455 nm

CO₂ ÷ CO₂ per mile

Time at sea

925 h

39 days, 11% 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 101 kg/nm · median 79.7 (+27%)

52.8Ranks 1,190 of 1,460, lowest first111

Average speedThis ship 9.4 kn · median 11.1 (−15%)

8.8Faster than 16% of chemical tanker ships12.4

CO₂ per transport work (cargo)This ship 32.6 g CO₂/t·nm · median 15.0 (+117%)

7.93Ranks 1,210 of 1,460, lowest first40.2

Middle 80% of shipsMiddle 50%Chemical tanker medianThis ship

Where the emissions happen, 2023

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 ports14%
From the EU19%
Into the EU66%
At berth in the EU2%

Fuel burned laden

–

Not reported

CO₂ at berth

36 t

1.7% 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 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

HELEN
Chemical tanker median

60.070.080.090.0100.0110.0

’182018’192019’232023’242024’252025

Average speed, kn

HELEN
Chemical tanker median

9.010.011.012.013.0

’182018’192019’232023’242024’252025

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

HELEN
Chemical tanker median

15.020.025.030.035.0

’182018’192019’232023’242024’252025

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	−1.4 kn	+21%	+5%	−65%	+20%	1.4 kn slower, fuel per mile up 21%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	−0.5 kn	+28%	+23%	+104%	+72%	0.5 kn slower, fuel per mile up 28%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2023	−0.6 kn	−25%	−29%	−28%	−12%	0.6 kn slower, fuel per mile down 25%; better than speed alone explains (hull, engine or trade).
2018→2019	−0.2 kn	+14%	+12%	−12%	−16%	Same speed, fuel per mile up 14%; 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
2025	Ocean Express Shipping Company Limited	757	2,388	7,495	800	9.4	101	32.6	–
2024	PHUONG DONG PETROL TRANSPORTATION COMPANY LIMITED	1,777	5,544	21,278	1,967	10.8	83.5	27.2	–
2023	not published	682	2,127	10,455	925	11.3	65.3	15.8	–
2019	not published	1,272	4,015	14,592	1,228	11.9	87.1	17.9	–
2018	not published	1,273	3,991	16,640	1,378	12.1	76.5	21.3	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Chemical tanker median	vs Chemical tanker	Rank	Verifier	Methods
2025	Ocean Express Shipping Company Limited	32.6	15.0	+117%	1,210 of 1,460	Lloyd's Register	A
2024	PHUONG DONG PETROL TRANSPORTATION COMPANY LIMITED	27.2	16.7	+62%	939 of 1,274	Lloyd's Register	A
2023	not published	15.8	16.2	−3%	629 of 1,314	Lloyd's Register	A
2019	not published	17.9	17.3	+3%	691 of 1,321	ABS	A+B
2018	not published	21.3	17.1	+24%	849 of 1,294	ABS	A+B

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.