Gas carrier · Antigua and Barbuda flag · built 2013

ZETAGAS: CO₂ emissions 2018–2025

IMO 9623984 EU ETS8 reporting years

CO₂ reported 2025: 6,368 t
Fuel burned: 2,012 t
Time at sea: 2,685 h
Emitted at berth: 16% of total
Share of year under way: 31%
Gross tonnage: 8,009

ZETAGAS against its type

Built in 2013, it is the same age as the median gas carrier on this register (build year 2013, 530 vessels with a known build year). At 8,009 gross tonnage it is smaller than 83% of the other 525 gas carriers with a recorded tonnage. It is one of 10 gas carriers here under the Antigua and Barbuda flag, 1.5% of the 688 on the register. The same builder is recorded for 96 other vessels here, 7 of them gas carriers. Sloman Neptun Schiffahrts-Aktiengesellschaft is linked to 8 vessels on this register. Its MRV returns name it ZETAGAS for 2018–2021, ZETAGAS (ZETAGAS) for 2022–2023 and ZETAGAS for 2024–2025. The reported port of registry changed: Saint John's (2018–2021), then Saint John's (AG SJO) (2022–2023), then Saint John's (2024–2025).

Its 6,368 t of CO₂ for 2025 is close to the median of 5,974 t among the 363 gas carriers on this register that reported for 2025. Per nautical mile it emitted 238.1 kg CO₂, close to the type median of 256.2 kg. It logged 2,685 hours at sea against a median of 1,943 hours for its type that year. 15.9% of its 2025 emissions were at berth; the median for gas carriers was 3.8%. Across 8 years with reported emissions, the highest was 2018 (10,717 t) and the lowest 2021 (4,790 t). Its efficiency percentile within the type went from 92 in 2018 to 99 in 2024 (lower is more efficient). Of the 2 sister ships listed below with a 2025 return, 1 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	6,368	2,012	—	2,685	1,011	238.1	219.9	not ranked
2024	5,873	1,835	26,349	2,528	935	222.9	179.8	99
2023	6,977	2,196	39,525	3,733	648	176.5	102.8	88
2022	5,995	1,887	22,999	2,162	769	260.7	113.7	90
2021	4,790	1,494	—	1,061	669	382.9	261.8	not ranked
2020	7,965	2,495	34,852	2,954	1,525	228.5	156.9	97
2019	8,120	2,544	33,581	6,143	1,165	241.8	141.2	94
2018	10,717	3,369	44,993	6,649	1,478	238.2	136.1	92

Vessel particulars

IMO number: 9623984
Previously reported as: ZETAGAS (ZETAGAS)
Ship type: Gas carrier
Gross tonnage: 8,009
Length overall: 113.0 m
Beam: 19.2 m
Year built: 2013
Flag state: Antigua and Barbuda per EU MRV 2025
Builder: STX Offshore & Shipbuilding
Port of registry: Saint John's MRV 2025
Ice class: IC
Technical efficiency (design): EEXI (14.94 gCO₂/t·nm)
Operator: Sloman Neptun Schiffahrts-Aktiengesellschaft
Efficiency ranking: Not ranked: transport work below the floor (2025)
Verifier: Swiss Climate EcoCare GmbH, Germany
Accreditation: D-VS-20810-01
Compliance document issued: 2026-03-21
Compliance document expires: 2027-06-30

Reported CO₂ by year

Reported CO₂ in 2025 was 40.6% lower than in 2018, for EU/EEA voyages only.

From 2024 to 2025, emissions rose 8.4% and CO₂ per nautical mile rose 6.8%.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: 6,466 t
Methane (CH₄): 0.10 t
Nitrous oxide (N₂O): 0.36 t
Under EU ETS: 5,539 t, 87% of total

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) and Wikimedia Commons.

This page draws on 8 MRV reporting years, 5 of 5 vessel particulars, a name history and a licensed photograph. Not found in the sources for this vessel: an efficiency ranking, AIS movements in Norwegian waters, 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.