Navalyze · General cargo · Ship

OSAKANA

IMO: 9253870
Type: General cargo ship
Flag (estimated): Isle of Man
Port of registry: Douglas
Technical efficiency: EEXI 6.13 g CO₂/t·nm

ISM company (DoC holder) in 2025: Masterbulk AS

Report year

2021 at a glance

From the 2021 THETIS-MRV report.

Fuel kg/nm

118

General cargo median 55.9 kg/nm (+111%)

CO₂ per transport work (dwt)

11.0

g CO₂/dwt·nm · General cargo median 22.7 (−52%)

Average speed

12.2 kn

General cargo median 10.9 kn (+12%)

Fuel per day at sea

34.5 t/day

Fuel consumed

1,893 t

CO₂ emitted

5,906 t

Distance sailed

16,021 nm

CO₂ ÷ CO₂ per mile

Time at sea

1,318 h

55 days, 15% of the year

Within the general cargo fleet, 2025

Set against all 2,723 general cargo 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 107 kg/nm · median 35.2 (+203%)

17.4Ranks 2,696 of 2,723, lowest first78.8

Average speedThis ship 12.4 kn · median 9.3 (+33%)

6.9Faster than 93% of general cargo ships12.0

CO₂ per transport work (dwt)This ship 11.2 g CO₂/dwt·nm · median 25.5 (−56%)

10.2Ranks 324 of 2,723, lowest first52.7

Middle 80% of shipsMiddle 50%General cargo 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 ports12%
From the EU31%
Into the EU54%
At berth in the EU3%

Fuel burned laden

–

Not reported

CO₂ at berth

164 t

2.8% 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 General cargo median is the middle ship of all general cargo ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.

Fuel kg/nm

OSAKANA
General cargo median

25.050.075.0100.0125.0

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

Average speed, kn

OSAKANA
General cargo median

9.010.011.012.013.0

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

CO₂ per transport work (dwt), g CO₂/dwt·nm

OSAKANA
General cargo median

5.010.015.020.025.030.0

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

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	+1.7 kn	+25%	+45%	−29%	+29%	1.7 kn faster, fuel per mile up 25%; better than speed alone explains (hull, engine or trade).
2023→2024	+1.0 kn	−22%	−15%	+311%	−39%	1.0 kn faster, fuel per mile down 22%; better than speed alone explains (hull, engine or trade).
2021→2023	−2.5 kn	−8%	−26%	−59%	+30%	2.5 kn slower, fuel per mile down 8%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+0.4 kn	+18%	+22%	−53%	+11%	0.4 kn faster, fuel per mile up 18%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	+1.2 kn	+10%	+23%	+212%	−28%	1.2 kn faster, fuel per mile up 10%; better than speed alone explains (hull, engine or trade).
2018→2019	−0.8 kn	−16%	−23%	−59%	+25%	0.8 kn slower, fuel per mile down 16%; in line with the speed change.

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	Masterbulk AS	2,044	6,424	19,199	1,552	12.4	107	–	–
2024	Masterbulk AS	2,295	7,176	26,911	2,521	10.7	85.3	–	–
2023	not published	715	2,252	6,543	673	9.7	109	–	–
2021	not published	1,893	5,906	16,021	1,318	12.2	118	–	–
2020	not published	3,384	10,650	33,903	2,868	11.8	99.8	–	–
2019	not published	990	3,093	10,883	1,032	10.6	91.0	–	–
2018	not published	2,852	8,909	26,226	2,300	11.4	109	–	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/dwt·nm	General cargo median	vs General cargo	Rank	Verifier	Methods
2025	Masterbulk AS	11.2	25.5	−56%	324 of 2,723	DNV	B
2024	Masterbulk AS	8.69	19.3	−55%	182 of 1,111	DNV	B
2023	not published	14.2	20.7	−31%	309 of 1,045	DNV	B
2021	not published	11.0	22.7	−52%	124 of 1,142	DNV	B
2020	not published	9.91	24.5	−60%	92 of 1,167	DNV	B
2019	not published	13.8	25.0	−45%	158 of 1,154	DNV	B
2018	not published	11.1	24.9	−55%	122 of 1,044	DNV	B

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. General cargo ships are benchmarked on CO₂ per transport work (dwt) (TW), in g CO₂/dwt·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 general cargo 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.