Navalyze · Container · Ship

MUSTAFA DAYI

IMO: 9365855
Type: Container ship
Average cargo carried: 16,561 t
Flag (estimated): Turkiye
Port of registry: Istanbul
Technical efficiency: EEXI 16.51 g CO₂/t·nm
Ice class: IC

ISM company (DoC holder) in 2025: KASIF GEMI ISLETMECILIGI A.S.

Report year

2021 at a glance

From the 2021 THETIS-MRV report. Carries about 15,048 t of cargo on average.

Fuel kg/nm

115

Container median 186 kg/nm (−38%)

CO₂ per transport work (cargo)

23.9

g CO₂/t·nm · Container median 17.9 (+33%)

Average speed

14.4 kn

Container median 14.1 kn (+2%)

Fuel per day at sea

39.8 t/day

Fuel consumed

1,939 t

CO₂ emitted

6,044 t

Distance sailed

16,826 nm

CO₂ ÷ CO₂ per mile

Time at sea

1,169 h

49 days, 13% of the year

Within the container fleet, 2025

Set against all 2,208 container 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 102 kg/nm · median 177 (−43%)

78.8Ranks 554 of 2,208, lowest first302

Average speedThis ship 12.3 kn · median 13.3 (−8%)

9.1Faster than 34% of container ships16.0

CO₂ per transport work (cargo)This ship 19.1 g CO₂/t·nm · median 16.3 (+17%)

7.22Ranks 1,289 of 2,208, lowest first46.9

Middle 80% of shipsMiddle 50%Container 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 ports0%
From the EU62%
Into the EU38%
At berth in the EU0%

Fuel burned laden

1,939 t

100% of all fuel; 0% in ballast or unladen

CO₂ at berth

7 t

0.1% 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 Container median is the middle ship of all container ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.

Fuel kg/nm

MUSTAFA DAYI
Container median

75.0100.0125.0150.0175.0200.0

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

Average speed, kn

MUSTAFA DAYI
Container median

11.012.013.014.015.0

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

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

MUSTAFA DAYI
Container median

15.020.025.030.0

’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	−1.1 kn	−12%	−19%	−82%	−15%	1.1 kn slower, fuel per mile down 12%; in line with the speed change.
2023→2024	+0.0 kn	−5%	−5%	+15%	−17%	Same speed, fuel per mile down 5%; in line with the speed change.
2022→2023	−0.6 kn	−0%	−5%	+81%	+5%	0.6 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	−0.4 kn	+6%	+3%	+8%	+7%	0.4 kn slower, fuel per mile up 6%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+2.8 kn	+22%	+50%	+179%	−5%	2.8 kn faster, fuel per mile up 22%; better than speed alone explains (hull, engine or trade).
2019→2020	−2.3 kn	−12%	−26%	−91%	−12%	2.3 kn slower, fuel per mile down 12%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	−0.9 kn	−6%	−12%	−14%	+7%	0.9 kn slower, fuel per mile down 6%; 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	KASIF GEMI ISLETMECILIGI A.S.	683	2,130	6,733	549	12.3	102	19.1	–
2024	KASIF GEMI ISLETMECILIGI A.S.	4,386	13,669	38,090	2,834	13.4	115	22.4	–
2023	not published	4,005	12,480	33,079	2,470	13.4	121	26.9	–
2022	not published	2,220	6,918	18,243	1,300	14.0	122	25.5	100%
2021	not published	1,939	6,044	16,826	1,169	14.4	115	23.9	100%
2020	not published	572	1,783	6,032	518	11.6	94.8	25.1	100%
2019	not published	7,366	22,970	68,300	4,906	13.9	108	28.5	–
2018	not published	9,119	28,442	79,546	5,357	14.8	115	26.6	100%

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Container median	vs Container	Rank	Verifier	Methods
2025	KASIF GEMI ISLETMECILIGI A.S.	19.1	16.3	+17%	1,289 of 2,208	DNV	A
2024	KASIF GEMI ISLETMECILIGI A.S.	22.4	17.5	+28%	1,238 of 1,974	DNV	A
2023	not published	26.9	19.4	+39%	1,257 of 1,899	DNV	A
2022	not published	25.5	19.1	+33%	1,159 of 1,825	Verifavia	A
2021	not published	23.9	17.9	+33%	1,152 of 1,781	Verifavia	A
2020	not published	25.1	17.6	+43%	1,227 of 1,797	Verifavia	A
2019	not published	28.5	18.9	+51%	1,218 of 1,788	Verifavia	A
2018	not published	26.6	20.2	+31%	1,091 of 1,705	Verifavia	A

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Container 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 container 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.