Chemical tanker · Saint Kitts and Nevis flag · built 2000
DILIGENT STAR: CO₂ emissions 2018–2025
IMO 9222651 EU ETS6 reporting years
- CO₂ reported 2025
- 2,609 t
- Fuel burned
- 827 t
- Distance
- 9,521 nm
- Time at sea
- 877 h
- Emitted at berth
- 6% of total
- Share of year under way
- 10%
- Gross tonnage
- 12,044
DILIGENT STAR against its type
Built in 2000, it is 10 years older than the median chemical tanker on this register, which was built in 2010 (1,951 vessels with a known build year). At 12,044 gross tonnage it is smaller than 70% of the other 1,899 chemical tankers with a recorded tonnage. It is the only chemical tanker on this register under the Saint Kitts and Nevis flag. The same builder is recorded for 307 other vessels here, 98 of them chemical tankers. Its MRV returns name it GINGA HAWK for 2018–2024 and DILIGENT STAR for 2025. The reported port of registry changed: PANAMA (2018), then SINGAPORE (2019–2024), then Basseterre (2025).
Its 2,609 t of CO₂ for 2025 is 53% below the median of 5,533 t among the 1,483 chemical tankers on this register that reported for 2025. Per nautical mile it emitted 274.1 kg CO₂, close to the type median of 250.2 kg. It logged 877 hours at sea against a median of 2,109 hours for its type that year. 5.5% of its 2025 emissions were at berth; the median for chemical tankers was 6.6%. Across 6 years with reported emissions, the highest was 2021 (3,009 t) and the lowest 2019 (767 t). Its efficiency percentile within the type went from 84 in 2018 to 57 in 2025 (lower is more efficient). Of the 4 comparable vessels listed below with a 2025 return, 4 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 | 2,609 | 827 | 9,521 | 877 | 145 | 274.1 | 16.0 | 57 |
| 2024 | 2,401 | 762 | 11,956 | 960 | 56 | 200.8 | 13.7 | 41 |
| 2022 | 1,624 | 514 | 8,236 | 728 | 18 | 197.1 | 22.9 | 74 |
| 2021 | 3,009 | 950 | 10,503 | 846 | 442 | 286.5 | 30.4 | 83 |
| 2019 | 767 | 245 | — | 257 | 22 | 225.8 | 157.4 | not ranked |
| 2018 | 2,598 | 832 | 10,079 | 972 | 90 | 257.8 | 31.2 | 84 |
Vessel particulars
- IMO number
- 9222651
- Previously reported as
- GINGA HAWK
- Ship type
- Chemical tanker
- Gross tonnage
- 12,044
- Length overall
- 147.0 m
- Beam
- 24.0 m
- Year built
- 2000
- Flag state
- Saint Kitts and Nevis per EU MRV 2025
- Builder
- Shin Kurushima Dockyard
- Port of registry
- Basseterre MRV 2025
- Technical efficiency (design)
- EEXI (7.77 gCO₂/t·nm)
- Verifier
- Nippon Kaiji Kyokai, Japan
- Accreditation
- VS-21325-01
- Compliance document issued
- 2026-03-26
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 767 of 1,348 qualifying chemical tankers by EEOI, at the 57th percentile. The dashed line is the type median, 14.4; this vessel reported 16.0.
EEOI divides emissions by transport work, which for this vessel and year was 162,775,421 tonne-miles over 9,521 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 0.4% higher than in 2018, for EU/EEA voyages only. No return is recorded for 2020, 2023, so the series has gaps.
From 2024 to 2025, emissions rose 8.7% while distance sailed fell 20.4%and CO₂ per nautical mile rose 36.5%.That points mainly to how efficiently it sailed, rather than the other.
Where the 2025 emissions occurred
Methane, nitrous oxide and EU ETS2025
- Total CO₂ equivalent
- 2,650 t
- Methane (CH₄)
- 0.04 t
- Nitrous oxide (N₂O)
- 0.15 t
- Under EU ETS
- 1,455 t, 56% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | Nippon Kaiji Kyokai | Japan |
| 2024 | DNV | Germany |
| 2025 | Nippon Kaiji Kyokai | Japan |
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 6 MRV reporting years, an efficiency ranking, 5 of 5 vessel particulars and a name history. Not found in the sources for this vessel: 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.