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Navalyze · Oil tanker · Ship

IOANNIS ZAFIRAKIS

IMO
9890587
Type
Oil tanker
Average cargo carried
35,161 t
Flag (estimated)
Bahamas
Port of registry
Nassau
Technical efficiency
EEXI 4.08 g CO₂/t·nm

ISM company (DoC holder) in 2025: Sun Enterprises ltd

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2025 at a glance

From the 2025 THETIS-MRV report. Carries about 35,161 t of cargo on average.

Fuel kg/nm
112
Oil tanker median 129 kg/nm (−13%)
CO₂ per transport work (cargo)
10.1
g CO₂/t·nm · Oil tanker median 7.95 (+27%)
Average speed
11.0 kn
Oil tanker median 10.7 kn (+3%)
Fuel per day at sea
29.8 t/day
Fuel consumed
2,731 t
CO₂ emitted
8,621 t
8,755 t CO₂eq incl. CH₄ and N₂O
Distance sailed
24,301 nm
CO₂ ÷ CO₂ per mile
Time at sea
2,203 h
92 days, 25% of the year

Within the oil tanker fleet, 2025

Set against all 1,665 oil 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 112 kg/nm · median 129 (−13%)
76.1Ranks 548 of 1,665, lowest first191
Average speedThis ship 11.0 kn · median 10.7 (+3%)
8.0Faster than 59% of oil tanker ships12.1
CO₂ per transport work (cargo)This ship 10.1 g CO₂/t·nm · median 7.95 (+27%)
4.51Ranks 1,071 of 1,665, lowest first27.7
Middle 80% of shipsMiddle 50%Oil tanker medianThis ship

Where the emissions happen, 2025

THETIS splits each ship's emissions 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 ports15%
  • From the EU40%
  • Into the EU33%
  • At berth in the EU11%

63% of this ship's CO₂ falls under the EU ETS (5,457 t).

Fuel burned laden
–
Not reported
CO₂ at berth
983 t
11.4% of the ship's CO₂, alongside in EU ports
Methane (CH₄)
0.1 t
Mainly from LNG; small for oil, biofuel and methanol
CO₂eq uplift
+134 t
+1.6% CO₂eq on top of CO₂ alone, from CH₄ and N₂O; counted in full from 2026

Over the years

Full-year reports only. The Oil tanker median is the middle ship of all oil tanker ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.

Fuel kg/nm

  • IOANNIS ZAFIRAKIS
  • Oil tanker median

Average speed, kn

  • IOANNIS ZAFIRAKIS
  • Oil tanker median

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

  • IOANNIS ZAFIRAKIS
  • Oil tanker median

Year on year

YearAverage speedFuel kg/nmFuel per day at seaDistanceCO₂ per transport workReading
2024→2025+1.7 kn+14%+35%−6%−49%1.7 kn faster, fuel per mile up 14%; 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
2025Sun Enterprises ltd2,7318,62124,3012,20311.011210.1–
2024Sun Enterprises ltd2,5528,04725,9302,7839.398.419.7–

Benchmark and verification

YearISM companyCO₂ per TW, g CO₂/t·nmOil tanker medianvs Oil tankerRankVerifierMethods
2025Sun Enterprises ltd10.17.95+27%1,071 of 1,665DNVA
2024Sun Enterprises ltd19.78.06+144%1,521 of 1,787DNVA

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