Oil tanker · Norway flag · built 2006

STEN MOSTER: CO₂ emissions 2018–2025

IMO 9341184 EU ETS8 reporting years

CO₂ reported 2025: 6,359 t
Fuel burned: 1,983 t
Distance: 25,973 nm
Time at sea: 2,507 h
Emitted at berth: 17% of total
Share of year under way: 29%
Gross tonnage: 11,935

STEN MOSTER against its type

Built in 2006, it is 4 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 58 oil tankers here under the Norway 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: Gibraltar (2018–2020), then Bergen (2021–2025).

Its 6,359 t of CO₂ for 2025 is 20% below the median of 7,922 t among the 1,704 oil tankers on this register that reported for 2025. Per nautical mile it emitted 244.8 kg CO₂, 39% below the type median of 403.2 kg. It logged 2,507 hours at sea against a median of 2,030 hours for its type that year. 16.7% of its 2025 emissions were at berth; the median for oil tankers was 7.8%. Across 8 years with reported emissions, the highest was 2020 (10,140 t) and the lowest 2018 (3,298 t). Its efficiency percentile within the type went from 94 in 2019 to 96 in 2025 (lower is more efficient). Of the 7 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	6,359	1,983	25,973	2,507	1,062	244.8	26.8	96
2024	7,614	2,375	31,353	2,963	1,196	242.9	28.4	97
2023	7,931	2,477	32,555	3,232	1,224	243.6	28.5	96
2022	8,341	2,603	37,006	3,676	1,194	225.4	28.4	97
2021	6,097	1,902	28,589	2,800	1,068	213.3	28.4	97
2020	10,140	3,169	50,400	4,962	827	201.2	19.6	88
2019	8,578	2,681	41,766	6,421	1,029	205.4	26.2	94
2018	3,298	1,034	—	2,324	276	209.9	29.6	not ranked

Vessel particulars

IMO number: 9341184
Ship type: Oil tanker
Gross tonnage: 11,935
Length overall: 144.1 m
Year built: 2006
Flag state: Norway per EU MRV 2025
Sources disagree: Wikidata/AIS (undated) list Gibraltar. The flag shown is from the newest official source, the EU MRV return for 2025.
Builder: Jiangnan Shipyard
Port of registry: Bergen MRV 2025
Ice class: IA
Technical efficiency (design): EEXI (7.41 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 1,395 of 1,448 qualifying oil tankers by EEOI, at the 96th percentile. The dashed line is the type median, 7.5; this vessel reported 26.8.

EEOI divides emissions by transport work, which for this vessel and year was 237,088,740 tonne-miles over 25,973 nautical miles.

Reported CO₂ by year

Reported CO₂ in 2025 was 92.8% higher than in 2018, for EU/EEA voyages only.

From 2024 to 2025, emissions fell 16.5% while distance sailed fell 17.2%and CO₂ per nautical mile rose 0.8%.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: 6,456 t
Methane (CH₄): 0.10 t
Nitrous oxide (N₂O): 0.36 t
Under EU ETS: 5,615 t, 88% 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).

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.