DIAMOND SEA: CO₂ emissions 2018–2025

DIAMOND SEA against its type

Built in 2011, it is 1 year older than the median bulk carrier on this register, which was built in 2012 (6,882 vessels with a known build year). At 31,617 gross tonnage it is smaller than 67% of the other 6,571 bulk carriers with a recorded tonnage. It is one of 479 bulk carriers here under the Malta flag, 5.9% of the 8,138 on the register. The same builder is recorded for 24 other vessels here, 16 of them bulk carriers. The returns for 2018–2025 all give Valletta as port of registry.

Its 2,047 t of CO₂ for 2025 is 37% below the median of 3,239 t among the 3,731 bulk carriers on this register that reported for 2025. Per nautical mile it emitted 275.0 kg CO₂, close to the type median of 260.7 kg. It logged 712 hours at sea against a median of 1,200 hours for its type that year. 5.5% of its 2025 emissions were at berth; the median for bulk carriers was 3.7%. Across 5 years with reported emissions, the highest was 2021 (7,191 t) and the lowest 2025 (2,047 t). Its efficiency percentile within the type went from 47 in 2018 to 58 in 2025 (lower is more efficient). Of the 3 sister ships listed below with a 2025 return, 2 reported a lower CO₂ per nautical mile than this vessel.

Emissions by year2018–2025

Vessel particulars

IMO number

9468152

Ship type

Bulk carrier

Gross tonnage

31,617

Year built

2011

Flag state

Malta per EU MRV 2025

Builder

Bulyard

Port of registry

Valletta MRV 2025

Technical efficiency (design)

EEXI (4.2 gCO₂/t·nm)

Verifier

RINA HELLAS LTD, Greece

Accreditation

1325

Compliance document issued

2026-03-26

Compliance document expires

2027-06-30

Efficiency against its own type2025

Position 1,890 of 3,241 qualifying bulk carriers by EEOI, at the 58th percentile. The dashed line is the type median, 7.6; this vessel reported 8.2.

EEOI divides emissions by transport work, which for this vessel and year was 249,282,582 tonne-miles over 7,443 nautical miles.

Reported CO₂ by year

Reported CO₂ in 2025 was 71.2% lower than in 2018, for EU/EEA voyages only.

From 2022 to 2025, emissions fell 8.5% while distance sailed fell 7.8%and CO₂ per nautical mile fell 0.7%.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

2,078 t

Methane (CH₄)

0.03 t

Nitrous oxide (N₂O)

0.12 t

Under EU ETS

1,900 t, 93% of total

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 8 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 vesselssister ships and nearest by tonnage

• KARVUNA sister · 2010 · 13,965 GT · 529 t · 249.9 kg/nm
• ANTHEIA sister · 2010 · 13,965 GT · 2,572 t · 160.3 kg/nm
• PABELA sister · 2011 · 31,617 GT · 1,377 t · 286.7 kg/nm
• DIAMOND SKY sister · 2012 · 31,617 GT · 1,279 t · 280.8 kg/nm
• NORDIC STAVANGER 2011 · 31,748 GT · 4,355 t · 267.0 kg/nm
• BOLD VOYAGER 2010 · 31,749 GT · 1,626 t · 293.8 kg/nm
• EVEREST 2012 · 31,598 GT · 1,471 t · 317.3 kg/nm
• OAK BAY 2013 · 31,749 GT · 2,529 t · 256.2 kg/nm