Oil tanker · Portugal flag · built 2005

STEN BALTIC: CO₂ emissions 2018–2025

IMO 9307671 EU ETS8 reporting years

CO₂ reported 2025: 8,795 t
Fuel burned: 2,757 t
Distance: 38,665 nm
Time at sea: 3,866 h
Emitted at berth: 13% of total
Share of year under way: 44%
Gross tonnage: 11,935

STEN BALTIC against its type

Built in 2005, it is 5 years older than the median oil tanker on this register, which was built in 2010 (2,896 vessels with a known build year). At 11,935 gross tonnage it is smaller than 94% of the other 2,841 oil tankers with a recorded tonnage. It is one of 56 oil tankers here under the Portugal flag, 1.6% of the 3,548 on the register. The same builder is recorded for 98 other vessels here, 19 of them oil tankers. The reported port of registry changed: Bergen (2018–2023), then Madeira (2024–2025).

Its 8,795 t of CO₂ for 2025 is 11% above the median of 7,922 t among the 1,704 oil tankers on this register that reported for 2025. Per nautical mile it emitted 227.5 kg CO₂, 44% below the type median of 403.2 kg. It logged 3,866 hours at sea against a median of 2,030 hours for its type that year. 13.2% of its 2025 emissions were at berth; the median for oil tankers was 7.8%. Across 8 years with reported emissions, the highest was 2021 (9,912 t) and the lowest 2023 (7,577 t). Its efficiency percentile within the type went from 96 in 2018 to 98 in 2025 (lower is more efficient). Of the 6 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	8,795	2,757	38,665	3,866	1,157	227.5	30.7	98
2024	8,077	2,519	36,617	3,665	1,357	220.6	28.5	98
2023	7,577	2,363	35,500	3,655	1,430	213.4	27.6	96
2022	8,219	2,564	35,535	3,591	1,452	231.3	24.8	95
2021	9,912	3,092	45,651	4,435	1,440	217.1	26.5	96
2020	8,989	2,804	40,491	4,325	1,038	222.0	25.7	93
2019	8,123	2,534	39,440	6,307	1,080	206.0	26.4	95
2018	8,499	2,651	39,152	5,951	1,130	217.1	27.9	96

Vessel particulars

IMO number: 9307671
Ship type: Oil tanker
Gross tonnage: 11,935
Length overall: 144.1 m
Year built: 2005
Flag state: Portugal per EU MRV 2025
Builder: Jiangnan Shipyard
Port of registry: Madeira MRV 2025
Ice class: IA
Technical efficiency (design): EEXI (7.42 gCO₂/t·nm)
Verifier: DNV, Germany
Accreditation: VS-16026-01
Compliance document issued: 2026-02-16
Compliance document expires: 2027-06-30

Efficiency against its own type2025

Position 1,415 of 1,448 qualifying oil tankers by EEOI, at the 98th percentile. The dashed line is the type median, 7.5; this vessel reported 30.7.

EEOI divides emissions by transport work, which for this vessel and year was 286,590,746 tonne-miles over 38,665 nautical miles.

Reported CO₂ by year

Reported CO₂ in 2025 was 3.5% higher than in 2018, for EU/EEA voyages only.

From 2024 to 2025, emissions rose 8.9% while distance sailed rose 5.6%and CO₂ per nautical mile rose 3.1%.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: 8,931 t
Methane (CH₄): 0.14 t
Nitrous oxide (N₂O): 0.50 t
Under EU ETS: 7,379 t, 84% 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, an efficiency ranking, 5 of 5 vessel particulars and a licensed photograph. Not found in the sources for this vessel: AIS movements in Norwegian waters, a name history, 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.