Navalyze

Navalyze · Bulk carrier · Ship

DIAVOLEZZA

IMO
9694933
Type
Bulk carrier
Average cargo carried
48,459 t
Flag (estimated)
Switzerland
Port of registry
Basel
Technical efficiency
EEDI 3.33 g CO₂/t·nm

ISM company (DoC holder) in 2025: OCEANA SHIPPING AG

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2022 at a glance

From the 2022 THETIS-MRV report. Carries about 18,186 t of cargo on average.

Fuel kg/nm
113
Bulk carrier median 90.8 kg/nm (+24%)
CO₂ per transport work (cargo)
19.7
g CO₂/t·nm · Bulk carrier median 8.71 (+126%)
Average speed
9.9 kn
Bulk carrier median 11.1 kn (−11%)
Fuel per day at sea
26.9 t/day
Fuel consumed
737 t
CO₂ emitted
2,336 t
Distance sailed
6,537 nm
CO₂ ÷ CO₂ per mile
Time at sea
658 h
27 days, 8% 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 103 kg/nm · median 82.6 (+24%)
61.0Ranks 2,997 of 3,611, lowest first114
Average speedThis ship 10.0 kn · median 10.7 (−7%)
8.8Faster than 29% of bulk carrier ships11.8
CO₂ per transport work (cargo)This ship 6.63 g CO₂/t·nm · median 7.90 (−16%)
4.80Ranks 1,181 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 ports28%
  • From the EU49%
  • Into the EU18%
  • At berth in the EU5%
Fuel burned laden
–
Not reported
CO₂ at berth
124 t
5.3% 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

  • DIAVOLEZZA
  • Bulk carrier median

Average speed, kn

  • DIAVOLEZZA
  • Bulk carrier median

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

  • DIAVOLEZZA
  • Bulk carrier median

Year on year

YearAverage speedFuel kg/nmFuel per day at seaDistanceCO₂ per transport workReading
2022→2025+0.1 kn−9%−9%+40%−66%Same speed, fuel per mile down 9%; better than speed alone explains (hull, engine or trade).
2021→2022−1.1 kn+15%+4%−73%+257%1.1 kn slower, fuel per mile up 15%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2021+1.0 kn+2%+12%+32%+16%1.0 kn faster, fuel per mile flat; 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

YearISM companyFuel tCO₂ tDistance nmHours at seahAverage speedknots at seaFuel kg/nmthis shipCO₂ per transport work (cargo)g/t·nm, this shipLaden fuel
2025OCEANA SHIPPING AG9392,9439,16191410.01036.63100%
2022not published7372,3366,5376589.911319.7–
2021not published2,4007,51324,4882,22811.098.05.51–
2018not published1,7825,56218,5331,84510.096.14.73–

Benchmark and verification

YearISM companyCO₂ per TW, g CO₂/t·nmBulk carrier medianvs Bulk carrierRankVerifierMethods
2025OCEANA SHIPPING AG6.637.90−16%1,181 of 3,611RINAA
2022not published19.78.71+126%3,710 of 3,968RINAA
2021not published5.518.57−36%419 of 3,466RINAA
2018not published4.738.50−44%308 of 3,384RINAA

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.