TonneMiles

Ro-ro ship · Malta flag · built 2005

NEPTUNE OKEANIS: CO₂ emissions 2018–2025

IMO 9306706 EU ETS8 reporting years

CO₂ reported 2025
18,287 t
Fuel burned
5,794 t
Distance
65,044 nm
Time at sea
4,958 h
Emitted at berth
4% of total
Share of year under way
57%
Gross tonnage
27,788

NEPTUNE OKEANIS against its type

Built in 2005, it is 3 years newer than the median ro-ro ship on this register, which was built in 2002 (281 vessels with a known build year). At 27,788 gross tonnage it is larger than 70% of the other 269 ro-ro ships with a recorded tonnage. It is one of 52 ro-ro ships here under the Malta flag, 16.7% of the 311 on the register. The returns for 2018–2025 all give Valletta as port of registry.

Its 18,287 t of CO₂ for 2025 is 14% below the median of 21,362 t among the 238 ro-ro ships on this register that reported for 2025. Per nautical mile it emitted 281.1 kg CO₂, 14% below the type median of 327.0 kg. It logged 4,958 hours at sea against a median of 4,872 hours for its type that year. 3.8% of its 2025 emissions were at berth; the median for ro-ro ships was 4.3%. Across 8 years with reported emissions, the highest was 2024 (22,560 t) and the lowest 2022 (14,193 t). Its efficiency percentile within the type went from 95 in 2018 to 88 in 2025 (lower is more efficient). Of the 6 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 18,287 5,794 65,044 4,958 693 281.1 182.1 88
2024 22,560 7,232 73,294 6,132 588 307.8 249.7 94
2023 18,356 5,883 57,950 4,893 910 316.8 160.7 81
2022 14,193 4,552 47,569 3,682 488 298.4 171.5 88
2021 17,280 5,479 63,139 5,875 498 273.7 232.6 93
2020 16,485 5,224 52,492 4,499 746 314.1 335.3 100
2019 14,751 4,730 48,854 4,105 392 301.9 233.7 94
2018 17,148 5,499 57,802 4,875 549 296.7 224.6 95

Vessel particulars

IMO number
9306706
Ship type
Ro-ro ship
Gross tonnage
27,788
Length overall
165.0 m
Beam
26.2 m
Year built
2005
Flag state
Malta per EU MRV 2025
Port of registry
Valletta MRV 2025
Technical efficiency (design)
EEXI (18.97 gCO₂/t·nm)
Verifier
DNV, Germany
Accreditation
VS-16026-01
Compliance document issued
2026-02-23
Compliance document expires
2027-06-30

Efficiency against its own type2025

Position 170 of 192 qualifying ro-ro ships by EEOI, at the 88th percentile. The dashed line is the type median, 85.3; this vessel reported 182.1.

0255075100more efficientless efficientThis vessel: 88th percentile, EEOI 182.1

EEOI divides emissions by transport work, which for this vessel and year was 100,401,065 tonne-miles over 65,044 nautical miles.

Reported CO₂ by year

2018: 17,148 t201817,1482019: 14,751 t20192020: 16,485 t20202021: 17,280 t20212022: 14,193 t20222023: 18,356 t20232024: 22,560 t20242025: 18,287 t202518,287

Reported CO₂ in 2025 was 6.6% higher than in 2018, for EU/EEA voyages only.

From 2024 to 2025, emissions fell 18.9% while distance sailed fell 11.3%and CO₂ per nautical mile fell 8.7%.

Where the 2025 emissions occurred

At berthAt berth: 693 t693Within EEA portsWithin EEA ports: 693 t693Voyages between EEA portsVoyages between EEA ports: 5,214 t5,214Voyages to an EEA portVoyages to an EEA port: 5,684 t5,684Voyages from an EEA portVoyages from an EEA port: 6,696 t6,696

Methane, nitrous oxide and EU ETS2025

Total CO₂ equivalent
18,572 t
Methane (CH₄)
0.29 t
Nitrous oxide (N₂O)
1.04 t
Under EU ETS
12,097 t, 66% of total

Sources and how to read this

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 vesselsnearest by tonnage, same type