JBU ONYX: CO₂ emissions 2018–2025

JBU ONYX against its type

Built in 2008, it is 2 years older than the median chemical tanker on this register, which was built in 2010 (1,951 vessels with a known build year). At 11,565 gross tonnage it is smaller than 77% of the other 1,899 chemical tankers with a recorded tonnage. It is one of 15 chemical tankers here under the South Korea flag, 0.6% of the 2,344 on the register. The reported port of registry changed: Panama (2018), then JEJU (2022–2025).

Its 2,196 t of CO₂ for 2025 is 60% below the median of 5,531 t among the 1,484 chemical tankers on this register that reported for 2025. Per nautical mile it emitted 194.8 kg CO₂, 22% below the type median of 250.2 kg. It logged 1,043 hours at sea against a median of 2,106 hours for its type that year. 0.0% of its 2025 emissions were at berth; the median for chemical tankers was 6.6%. Across 5 years with reported emissions, the highest was 2024 (6,302 t) and the lowest 2023 (1,674 t). Its efficiency percentile within the type went from 58 in 2018 to 27 in 2025 (lower is more efficient). Of the 3 comparable vessels listed below with a 2025 return, 1 reported a lower CO₂ per nautical mile than this vessel.

Emissions by year2018–2025

Vessel particulars

IMO number

9392999

Ship type

Chemical tanker

Gross tonnage

11,565

Length overall

141.0 m

Beam

24.2 m

Year built

2008

Flag state

South Korea per EU MRV 2025

Port of registry

JEJU MRV 2025

Home port

JEJU

Technical efficiency (design)

EIV (11.51 gCO₂/t·nm)

Verifier

NORMEC VERIFAVIA SAS, France

Accreditation

3-2127

Compliance document issued

2026-02-27

Compliance document expires

2027-06-30

Efficiency against its own type2025

Position 360 of 1,348 qualifying chemical tankers by EEOI, at the 27th percentile. The dashed line is the type median, 14.4; this vessel reported 10.5.

EEOI divides emissions by transport work, which for this vessel and year was 209,941,683 tonne-miles over 11,271 nautical miles.

Reported CO₂ by year

Reported CO₂ in 2025 was 4.4% higher 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 65.2% while distance sailed fell 59.1%and CO₂ per nautical mile fell 14.9%.That points mainly to how much the vessel sailed, rather than the other.

Where the 2025 emissions occurred

Methane, nitrous oxide and EU ETS2025

Total CO₂ equivalent

2,231 t

Methane (CH₄)

0.04 t

Nitrous oxide (N₂O)

0.13 t

Under EU ETS

1,098 t, 50% of total

Laden voyages2025

CO₂ on laden voyages

2,196 t, 100% of total

Fuel, laden

705 t

CO₂ per nm, laden

194.8 kg

The rest of the 2025 total was emitted on ballast legs or at berth.

Verifier history

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, an efficiency ranking and 4 of 5 vessel particulars. Not found in the sources for this vessel: AIS movements in Norwegian waters, a name history, 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.

Comparable vesselsnearest by tonnage, same type

• JBU SAPPHIRE 2009 · 11,561 GT · 8,571 t · 248.6 kg/nm
• EASLINE GUANGZHOU 2001 · 11,566 GT · 4,314 t · 223.1 kg/nm
• JBU OPAL 2009 · 11,561 GT · 1,828 t · 354.6 kg/nm
• MAC LONDON 2003 · 11,568 GT · 1,043 t · 164.8 kg/nm
• CHEM WOLVERINE 2006 · 11,561 GT · 1,518 t · 197.9 kg/nm
• OCTADEN 2007 · 11,570 GT · 1,073 t · 244.5 kg/nm
• LILA CONFIDENCE 2006 · 11,561 GT · 2,132 t · 204.1 kg/nm
• AS OLIVIA 2007 · 11,570 GT · 5,160 t · 226.2 kg/nm