Navalyze · Chemical tanker · Ship

MAVKA

IMO: 9284647
Type: Chemical tanker
Average cargo carried: 12,842 t
Flag (estimated): Panama
Port of registry: Panama
Technical efficiency: EIV 5.90 g CO₂/t·nm
Ice class: IA
Former names: BIT OKTANIA

ISM company (DoC holder) in 2025: Castilon Shipping International S.A.

Report year

2021 at a glance

From the 2021 THETIS-MRV report. Carries about 6,455 t of cargo on average.

Fuel kg/nm

66.3

Chemical tanker median 83.0 kg/nm (−20%)

CO₂ per transport work (cargo)

32.6

g CO₂/t·nm · Chemical tanker median 16.7 (+95%)

Average speed

13.0 kn

Chemical tanker median 11.2 kn (+16%)

Fuel per day at sea

20.6 t/day

Fuel consumed

4,610 t

CO₂ emitted

14,607 t

Distance sailed

69,515 nm

CO₂ ÷ CO₂ per mile

Time at sea

5,363 h

223 days, 61% 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 56.6 kg/nm · median 79.7 (−29%)

52.8Ranks 196 of 1,460, lowest first111

Average speedThis ship 9.5 kn · median 11.1 (−14%)

8.8Faster than 17% of chemical tanker ships12.4

CO₂ per transport work (cargo)This ship 13.9 g CO₂/t·nm · median 15.0 (−8%)

7.93Ranks 650 of 1,460, lowest first40.2

Middle 80% of shipsMiddle 50%Chemical tanker medianThis ship

Where the emissions happen, 2021

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 ports94%
From the EU0%
Into the EU0%
At berth in the EU6%

Fuel burned laden

–

Not reported

CO₂ at berth

887 t

6.1% 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

MAVKA
Chemical tanker median

40.060.080.0100.0120.0

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

Average speed, kn

MAVKA
Chemical tanker median

5.07.510.012.515.0

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

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

MAVKA
Chemical tanker median

0.020.040.060.080.0100

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

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	−16%	−28%	+51%	−52%	1.4 kn slower, fuel per mile down 16%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	+4.0 kn	−36%	+1%	+114%	−69%	4.0 kn faster, fuel per mile down 36%; better than speed alone explains (hull, engine or trade).
2022→2023	+0.4 kn	+45%	+54%	−65%	+134%	0.4 kn faster, fuel per mile up 45%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	−6.5 kn	+10%	−45%	−36%	+22%	6.5 kn slower, fuel per mile up 10%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+0.3 kn	−5%	−3%	+9%	−12%	0.3 kn faster, fuel per mile down 5%; better than speed alone explains (hull, engine or trade).
2019→2020	+2.2 kn	+6%	+28%	+12%	+17%	2.2 kn faster, fuel per mile up 6%; better than speed alone explains (hull, engine or trade).
2018→2019	−4.3 kn	−7%	−34%	+3%	−10%	4.3 kn slower, fuel per mile down 7%; 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	Castilon Shipping International S.A.	2,890	9,097	51,033	5,399	9.5	56.6	13.9	–
2024	Castilon Shipping International S.A.	2,279	7,204	33,784	3,097	10.9	67.4	28.8	–
2023	not published	1,659	5,250	15,766	2,275	6.9	105	93.2	–
2022	not published	3,231	10,295	44,470	6,811	6.5	72.7	39.8	–
2021	not published	4,610	14,607	69,515	5,363	13.0	66.3	32.6	–
2020	not published	4,450	13,909	63,774	5,017	12.7	69.8	37.0	–
2019	not published	3,759	11,759	56,898	5,422	10.5	66.1	31.7	–
2018	not published	3,915	12,251	55,334	3,749	14.8	70.8	35.1	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Chemical tanker median	vs Chemical tanker	Rank	Verifier	Methods
2025	Castilon Shipping International S.A.	13.9	15.0	−8%	650 of 1,460	Dromon Bureau of Shipping	A
2024	Castilon Shipping International S.A.	28.8	16.7	+72%	962 of 1,274	Korean Register	A
2023	not published	93.2	16.2	+474%	1,309 of 1,314	Korean Register	A
2022	not published	39.8	16.1	+148%	1,260 of 1,409	Korean Register	A
2021	not published	32.6	16.7	+95%	1,103 of 1,343	DNV	A
2020	not published	37.0	16.2	+129%	1,144 of 1,312	DNV	A
2019	not published	31.7	17.3	+83%	1,062 of 1,321	DNV	A
2018	not published	35.1	17.1	+105%	1,069 of 1,294	DNV	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.