Navalyze · Bulk carrier · Ship

IASOS

IMO: 9233882
Type: Bulk carrier
Average cargo carried: 33,268 t
Flag (estimated): Turkiye
Port of registry: Izmir
Technical efficiency: EEXI 4.29 g CO₂/t·nm

ISM company (DoC holder) in 2025: GULNAK DENIZCILIK NAKLIYAT VE TICARET ANONIM SIRKETI

Report year

2022 at a glance

From the 2022 THETIS-MRV report. Carries about 23,409 t of cargo on average.

Fuel kg/nm

82.2

Bulk carrier median 90.8 kg/nm (−9%)

CO₂ per transport work (cargo)

11.0

g CO₂/t·nm · Bulk carrier median 8.71 (+26%)

Average speed

10.6 kn

Bulk carrier median 11.1 kn (−5%)

Fuel per day at sea

20.9 t/day

Fuel consumed

3,602 t

CO₂ emitted

11,247 t

Distance sailed

43,797 nm

CO₂ ÷ CO₂ per mile

Time at sea

4,145 h

173 days, 47% of the year

Within the bulk carrier fleet, 2025

Set against all 3,611 bulk carrier 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 89.5 kg/nm · median 82.6 (+8%)

61.0Ranks 2,340 of 3,611, lowest first114

Average speedThis ship 10.8 kn · median 10.7 (+1%)

8.8Faster than 54% of bulk carrier ships11.8

CO₂ per transport work (cargo)This ship 8.50 g CO₂/t·nm · median 7.90 (+8%)

4.80Ranks 2,087 of 3,611, lowest first15.9

Middle 80% of shipsMiddle 50%Bulk carrier medianThis ship

Where the emissions happen, 2022

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 EU50%
Into the EU47%
At berth in the EU3%

Fuel burned laden

–

Not reported

CO₂ at berth

276 t

2.5% 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 Bulk carrier median is the middle ship of all bulk carrier ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.

Fuel kg/nm

IASOS
Bulk carrier median

80.090.0100.0110.0

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

Average speed, kn

IASOS
Bulk carrier median

8.09.010.011.012.013.0

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

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

IASOS
Bulk carrier median

6.08.010.012.014.016.0

’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	+0.7 kn	−6%	+0%	−33%	−25%	0.7 kn faster, fuel per mile down 6%; better than speed alone explains (hull, engine or trade).
2023→2024	−0.9 kn	+12%	+3%	+174%	−17%	0.9 kn slower, fuel per mile up 12%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	+0.4 kn	+3%	+7%	−71%	+24%	0.4 kn faster, fuel per mile up 3%; in line with the speed change.
2021→2022	−1.3 kn	+2%	−10%	−13%	+8%	1.3 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	−0.4 kn	+1%	−3%	+17%	−7%	0.4 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	+1.2 kn	−21%	−13%	−8%	−30%	1.2 kn faster, fuel per mile down 21%; better than speed alone explains (hull, engine or trade).
2018→2019	+2.2 kn	+9%	+37%	+44%	+16%	2.2 kn faster, fuel per mile up 9%; better than speed alone explains (hull, engine 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	GULNAK DENIZCILIK NAKLIYAT VE TICARET ANONIM SIRKETI	2,046	6,464	22,859	2,124	10.8	89.5	8.50	3%
2024	GULNAK DENIZCILIK NAKLIYAT VE TICARET ANONIM SIRKETI	3,258	10,214	34,374	3,399	10.1	94.8	11.3	–
2023	not published	1,062	3,319	12,557	1,139	11.0	84.5	13.7	–
2022	not published	3,602	11,247	43,797	4,145	10.6	82.2	11.0	–
2021	not published	4,086	12,753	50,538	4,236	11.9	80.9	10.2	–
2020	not published	3,489	10,995	43,379	3,525	12.3	80.4	11.0	–
2019	not published	4,797	15,018	46,909	4,215	11.1	102	15.6	–
2018	not published	3,043	9,500	32,533	3,652	8.9	93.5	13.5	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Bulk carrier median	vs Bulk carrier	Rank	Verifier	Methods
2025	GULNAK DENIZCILIK NAKLIYAT VE TICARET ANONIM SIRKETI	8.50	7.90	+8%	2,087 of 3,611	Verifavia	B
2024	GULNAK DENIZCILIK NAKLIYAT VE TICARET ANONIM SIRKETI	11.3	8.09	+40%	2,397 of 3,089	Verifavia	B
2023	not published	13.7	8.27	+65%	2,987 of 3,548	RINA	B
2022	not published	11.0	8.71	+26%	2,770 of 3,968	RINA	B
2021	not published	10.2	8.57	+19%	2,319 of 3,466	RINA	B
2020	not published	11.0	8.24	+33%	2,378 of 3,150	RINA	B
2019	not published	15.6	8.38	+86%	3,037 of 3,360	RINA	B
2018	not published	13.5	8.50	+58%	2,863 of 3,384	RINA	B

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Bulk carrier 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 bulk carrier 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.