Navalyze · Chemical tanker · Ship

DDELPHINUS 12

IMO: 9359375
Type: Chemical tanker
Average cargo carried: 17,711 t
Technical efficiency: EEXI 5.17 g CO₂/t·nm
Former names: STOLT SISTO

ISM company (DoC holder) in 2025: East Sun Maritime Management JSC

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 17,711 t of cargo on average.

Fuel per mile

99.6 kg/nm

Chemical tanker median 79.7 kg/nm (+25%)

CO₂ per transport work (cargo)

17.92

g CO₂/t·nm · Chemical tanker median 15.04 (+19%)

Average speed

15.1 kn

Chemical tanker median 11.1 kn (+36%)

Fuel per day at sea

36.2 t/day

Fuel consumed

734 t

CO₂ emitted

2,339 t

2,375 t CO₂eq incl. CH₄ and N₂O

Distance sailed

7,369 nm

CO₂ ÷ CO₂ per mile

Time at sea

487 h

20 days, 6% 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 99.6 kg/nm · median 79.7 (+25%)

52.8Ranks 1,167 of 1,460, lowest first111.0

Average speedThis ship 15.1 kn · median 11.1 (+36%)

8.8Faster than 100% of chemical tanker ships12.4

CO₂ per transport work (cargo)This ship 17.92 g CO₂/t·nm · median 15.04 (+19%)

7.93Ranks 870 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 ports10%
From the EU36%
Into the EU38%
At berth in the EU16%

63% of this ship's CO₂ falls under the EU ETS (1,470 t).

Fuel burned laden

–

Not reported

CO₂ at berth

16.1%

Alongside in EU ports

Methane (CH₄)

0.0 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

DDELPHINUS 12
Chemical tanker median

70.080.090.0100.0110.0120.0

’202020’212021’222022’232023’242024’252025

Average speed, kn

DDELPHINUS 12
Chemical tanker median

10.012.014.016.0

’202020’212021’222022’232023’242024’252025

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

DDELPHINUS 12
Chemical tanker median

7.510.012.515.017.520.0

’202020’212021’222022’232023’242024’252025

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2024→2025	+4.6 kn	−1%	+43%	−71%	+6%	4.6 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2023→2024	−1.6 kn	+6%	−8%	−7%	+52%	1.6 kn slower, fuel per mile up 6%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	−0.1 kn	+8%	+7%	+302%	+29%	Same speed, fuel per mile up 8%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	+1.5 kn	−23%	−12%	−79%	−38%	1.5 kn faster, fuel per mile down 23%; better than speed alone explains (hull, engine or trade).
2020→2021	−2.3 kn	+23%	+1%	+383%	+35%	2.3 kn slower, fuel per mile up 23%; worse than speed alone explains (fouling, weather, loading or trade).

Part-year reports are left out of these comparisons. 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	East Sun Maritime Management JSC	734	2,339	7,369	487	15.1	99.6	17.92	–
2024part-year	Stolt Tankers BV	2,297	7,255	21,842	2,126	10.3	105.2	15.25	–
2024	East Sun Maritime Management JSC	2,541	8,025	25,358	2,411	10.5	100.2	16.87	–
2023	not published	2,587	8,134	27,291	2,256	12.1	94.8	11.11	–
2022	not published	594	1,853	6,793	557	12.2	87.5	8.60	–
2021	not published	3,613	11,347	31,849	2,966	10.7	113.4	13.96	–
2020	not published	609	1,903	6,598	507	13.0	92.3	10.32	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Chemical tanker median	vs Chemical tanker	Rank	Verifier	Methods
2025	East Sun Maritime Management JSC	17.92	15.04	+19%	870 of 1,460	ClassNK	A
2024part-year	Stolt Tankers BV	–	–	–	–	DNV	B
2024	East Sun Maritime Management JSC	16.87	16.73	+1%	647 of 1,274	ClassNK	B
2023	not published	11.11	16.23	−32%	297 of 1,314	DNV	B
2022	not published	8.60	16.06	−46%	110 of 1,409	DNV	B
2021	not published	13.96	16.69	−16%	485 of 1,343	DNV	B
2020	not published	10.32	16.16	−36%	199 of 1,312	Lloyd's Register	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.