Oil tanker · Türkiye flag · built 2004
ASENA: CO₂ emissions 2018–2025
IMO 9274628 EU ETS5 reporting years
- CO₂ reported 2025
- 774 t
- Fuel burned
- 244 t
- Time at sea
- 247 h
- Emitted at berth
- 16% of total
- Share of year under way
- 3%
- Gross tonnage
- 26,634
ASENA against its type
Built in 2004, it is 6 years older than the median oil tanker on this register, which was built in 2010 (2,896 vessels with a known build year). At 26,634 gross tonnage it is smaller than 86% of the other 2,841 oil tankers with a recorded tonnage. It is one of 27 oil tankers here under the Türkiye flag, 0.8% of the 3,548 on the register. The same builder is recorded for 160 other vessels here, 8 of them oil tankers. Its MRV returns name it MAERSK ERIN for 2018 and ASENA for 2022–2025. The reported port of registry changed: Kobenhavn (2018), then Istanbul (2022–2025).
Its 774 t of CO₂ for 2025 is 90% below the median of 7,922 t among the 1,704 oil tankers on this register that reported for 2025. Per nautical mile it emitted 364.2 kg CO₂, close to the type median of 403.2 kg. It logged 247 hours at sea against a median of 2,030 hours for its type that year. 15.9% of its 2025 emissions were at berth; the median for oil tankers was 7.8%. Across 5 years with reported emissions, the highest was 2018 (15,776 t) and the lowest 2025 (774 t). Of the 3 comparable vessels listed below with a 2025 return, 0 reported a lower CO₂ per nautical mile than this vessel.
Emissions by year2018–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | 774 | 244 | — | 247 | 123 | 364.2 | 23.3 | not ranked |
| 2024 | 2,465 | 776 | — | 1,118 | 610 | 427.1 | 23.6 | not ranked |
| 2023 | 1,492 | 471 | — | 476 | 162 | 267.6 | — | not ranked |
| 2022 | 837 | 263 | — | 311 | 110 | 542.1 | 79.8 | not ranked |
| 2018 | 15,776 | 4,975 | 49,077 | 4,490 | 1,311 | 321.5 | 21.2 | 91 |
Vessel particulars
- IMO number
- 9274628
- Previously reported as
- MAERSK ERIN
- Ship type
- Oil tanker
- Gross tonnage
- 26,634
- Length overall
- 186.0 m
- Year built
- 2004
- Flag state
- Türkiye per EU MRV 2025
- Builder
- CSC Jinling
- Port of registry
- Istanbul MRV 2025
- Technical efficiency (design)
- EEXI (6.22 gCO₂/t·nm)
- Efficiency ranking
- Not ranked: transport work below the floor (2025)
- Verifier
- Bureau Veritas Certification France, France
- Accreditation
- 3-2047 rev. 4
- Compliance document issued
- 2026-04-16
- Compliance document expires
- 2027-06-30
Reported CO₂ by year
Reported CO₂ in 2025 was 95.1% lower than in 2018, for EU/EEA voyages only. No return is recorded for 2019, 2020, 2021, so the series has gaps.
From 2024 to 2025, emissions fell 68.6% and CO₂ per nautical mile fell 14.7%.Distance is missing for at least one of the two years, so activity and efficiency cannot be separated here.
Where the 2025 emissions occurred
Methane, nitrous oxide and EU ETS2025
- Total CO₂ equivalent
- 786 t
- Methane (CH₄)
- 0.01 t
- Nitrous oxide (N₂O)
- 0.04 t
- Under EU ETS
- 449 t, 58% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD) | Greece |
| 2022 | HELLENIC LLOYD'S S.A. | Greece |
| 2024 | Bureau Veritas Certification France | France |
A change of verifier is not in itself a sign of anything being wrong.
Sources and how to read this
- Emissions: EU MRV publication (THETIS-MRV), reporting years 2018–2025, published by the European Commission.
- Vessel particulars: Wikidata (CC0).
This page draws on 5 MRV reporting years, 5 of 5 vessel particulars and a name history. Not found in the sources for this vessel: an efficiency ranking, AIS movements in Norwegian waters, a licensed photograph, a sanctions listing and US port state inspections.
Empty means unreported, never zero. How EEOI, distance, percentiles and sister ships are handled is explained under reading a vessel page. Something wrong? See corrections.