Oil tanker · Marshall Islands flag · built 2011

ALTAI: CO₂ emissions 2018–2025

IMO 9446427 EU ETS8 reporting years

CO₂ reported 2025: 16,859 t
Fuel burned: 5,307 t
Distance: 29,653 nm
Time at sea: 3,212 h
Emitted at berth: 15% of total
Share of year under way: 37%
Gross tonnage: 61,248

ALTAI against its type

Built in 2011, it is 1 year newer than the median oil tanker on this register, which was built in 2010 (2,896 vessels with a known build year). At 61,248 gross tonnage it is larger than 54% of the other 2,841 oil tankers with a recorded tonnage. It is one of 793 oil tankers here under the Marshall Islands flag, 22.4% of the 3,548 on the register. The same builder is recorded for 563 other vessels here, 217 of them oil tankers. The returns for 2018–2025 all give Majuro as port of registry.

Its 16,859 t of CO₂ for 2025 is 2.1 times the median of 7,922 t among the 1,704 oil tankers on this register that reported for 2025. Per nautical mile it emitted 568.5 kg CO₂, 41% above the type median of 403.2 kg. It logged 3,212 hours at sea against a median of 2,030 hours for its type that year. 14.9% of its 2025 emissions were at berth; the median for oil tankers was 7.8%. Across 8 years with reported emissions, the highest was 2019 (19,239 t) and the lowest 2022 (12,878 t). Its efficiency percentile within the type went from 76 in 2018 to 82 in 2025 (lower is more efficient). Of the 4 sister ships listed below with a 2025 return, 3 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	16,859	5,307	29,653	3,212	2,519	568.5	12.8	82
2024	18,752	5,995	38,672	3,679	2,471	484.9	11.2	79
2023	17,680	5,626	35,829	3,379	2,028	493.5	11.0	74
2022	12,878	4,118	24,301	2,018	2,665	530.0	12.1	78
2021	13,652	4,363	26,324	2,600	2,137	518.6	12.3	75
2020	13,262	4,237	24,691	2,021	2,420	537.1	12.1	71
2019	19,239	6,137	34,286	4,572	3,362	561.1	9.9	63
2018	15,826	5,063	28,672	3,777	2,454	552.0	12.9	76

Vessel particulars

IMO number: 9446427
Ship type: Oil tanker
Gross tonnage: 61,248
Length overall: 249.0 m
Year built: 2011
Flag state: Marshall Islands per EU MRV 2025
Builder: Samsung Heavy Industries
Port of registry: Majuro MRV 2025
Home port: Majuro
Technical efficiency (design): EEXI (3.29 gCO₂/t·nm)
Verifier: AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD), Greece
Accreditation: 1083-2
Compliance document issued: 2026-03-20
Compliance document expires: 2027-06-30

Efficiency against its own type2025

Position 1,194 of 1,448 qualifying oil tankers by EEOI, at the 82nd percentile. The dashed line is the type median, 7.5; this vessel reported 12.8.

EEOI divides emissions by transport work, which for this vessel and year was 1,318,103,988 tonne-miles over 29,653 nautical miles.

Reported CO₂ by year

Reported CO₂ in 2025 was 6.5% higher than in 2018, for EU/EEA voyages only.

From 2024 to 2025, emissions fell 10.1% while distance sailed fell 23.3%and CO₂ per nautical mile rose 17.2%.

Where the 2025 emissions occurred

Methane, nitrous oxide and EU ETS2025

Total CO₂ equivalent: 17,119 t
Methane (CH₄): 0.27 t
Nitrous oxide (N₂O): 0.96 t
Under EU ETS: 9,919 t, 59% of total

Laden voyages2025

CO₂ on laden voyages: 7,441 t, 44% of total
Fuel, laden: 2,350 t
CO₂ per nm, laden: 498.3 kg

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

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 5 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.