Navalyze · Chemical tanker · Ship

ISLA DE BIOKO

IMO: 9767235
Type: Chemical tanker
Average cargo carried: 18,820 t
Technical efficiency: EEDI 4.37 g CO₂/t·nm

ISM company (DoC holder) in 2025: MOL Tankship Management Pte. Ltd. · part of MOL

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 18,820 t of cargo on average.

Fuel per mile

67.7 kg/nm

Chemical tanker median 79.7 kg/nm (−15%)

CO₂ per transport work (cargo)

11.37

g CO₂/t·nm · Chemical tanker median 15.04 (−24%)

Average speed

10.8 kn

Chemical tanker median 11.1 kn (−3%)

Fuel per day at sea

17.5 t/day

Fuel consumed

2,976 t

CO₂ emitted

9,410 t

9,556 t CO₂eq incl. CH₄ and N₂O

Distance sailed

43,977 nm

CO₂ ÷ CO₂ per mile

Time at sea

4,088 h

170 days, 47% 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 67.7 kg/nm · median 79.7 (−15%)

52.8Ranks 435 of 1,460, lowest first111.0

Average speedThis ship 10.8 kn · median 11.1 (−3%)

8.8Faster than 40% of chemical tanker ships12.4

CO₂ per transport work (cargo)This ship 11.37 g CO₂/t·nm · median 15.04 (−24%)

7.93Ranks 442 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 ports0%
From the EU49%
Into the EU47%
At berth in the EU4%

52% of this ship's CO₂ falls under the EU ETS (4,904 t).

Fuel burned laden

–

Not reported

CO₂ at berth

4.0%

Alongside in EU ports

Methane (CH₄)

0.2 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 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

ISLA DE BIOKO
Chemical tanker median

60.070.080.090.0100.0

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

Average speed, kn

ISLA DE BIOKO
Chemical tanker median

10.011.012.013.0

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

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

ISLA DE BIOKO
Chemical tanker median

10.012.014.016.018.0

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

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2024→2025	−0.3 kn	−6%	−8%	−45%	–	Same speed, fuel per mile down 6%; in line with the speed change.
2023→2024	−1.5 kn	−13%	−24%	−8%	–	1.5 kn slower, fuel per mile down 13%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	−0.1 kn	+6%	+5%	+3%	+3%	Same speed, fuel per mile up 6%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	+0.9 kn	+1%	+10%	+5%	+12%	0.9 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2020→2021	−0.6 kn	−3%	−8%	+21%	−7%	0.6 kn slower, fuel per mile down 3%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	+0.9 kn	+1%	+9%	−16%	−16%	0.9 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2018→2019	−1.3 kn	−2%	−11%	+17%	+26%	1.3 kn slower, fuel per mile flat; 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	MOL Tankship Management Pte. Ltd.	2,976	9,410	43,977	4,088	10.8	67.7	11.37	–
2024	MOL Tankship Management Pte. Ltd.	5,687	17,971	79,267	7,148	11.1	71.7	–	–
2023	not published	7,133	22,533	86,493	6,842	12.6	82.5	12.81	–
2022	not published	6,563	20,729	84,366	6,619	12.7	77.8	12.40	–
2021	not published	6,161	19,454	80,237	6,800	11.8	76.8	11.07	–
2020	not published	5,290	16,714	66,578	5,364	12.4	79.5	11.87	–
2019	not published	6,214	19,422	79,201	6,863	11.5	78.5	14.19	–
2018	not published	5,430	16,970	67,929	5,311	12.8	79.9	11.22	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Chemical tanker median	vs Chemical tanker	Rank	Verifier	Methods
2025	MOL Tankship Management Pte. Ltd.	11.37	15.04	−24%	442 of 1,460	ClassNK	B+C
2024	MOL Tankship Management Pte. Ltd.	–	–	–	–	ClassNK	B+C
2023	not published	12.81	16.23	−21%	414 of 1,314	ClassNK	C
2022	not published	12.40	16.06	−23%	431 of 1,409	ClassNK	C
2021	not published	11.07	16.69	−34%	269 of 1,343	ClassNK	C
2020	not published	11.87	16.16	−27%	321 of 1,312	ClassNK	C
2019	not published	14.19	17.32	−18%	460 of 1,321	ClassNK	C
2018	not published	11.22	17.14	−35%	265 of 1,294	ClassNK	C

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.