Oil tanker · Norway flag · built 2007

STEN HIDRA: CO₂ emissions 2018–2025

IMO 9358931 MMSI 258751000EU ETS8 reporting years

CO₂ reported 2025: 5,111 t
Fuel burned: 1,597 t
Distance: 20,850 nm
Time at sea: 2,118 h
Emitted at berth: 14% of total
Share of year under way: 24%
Gross tonnage: 11,935

STEN HIDRA against its type

Built in 2007, it is 3 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 returns for 2018–2025 all give Bergen as port of registry.

Its 5,111 t of CO₂ for 2025 is 35% 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 245.2 kg CO₂, 39% below the type median of 403.2 kg. It logged 2,118 hours at sea against a median of 2,030 hours for its type that year. 13.8% of its 2025 emissions were at berth; the median for oil tankers was 7.8%. Across 8 years with reported emissions, the highest was 2018 (9,028 t) and the lowest 2025 (5,111 t). Its efficiency percentile within the type was 96 in both 2018 and 2025. Of the 8 sister ships listed below with a 2025 return, 5 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	5,111	1,597	20,850	2,118	703	245.2	26.8	96
2024	7,873	2,459	36,463	3,587	1,271	215.9	29.4	98
2023	8,167	2,547	35,465	3,425	1,348	230.3	31.2	97
2022	7,074	2,212	33,713	3,387	1,028	209.8	28.7	97
2021	8,401	2,620	41,094	4,175	1,160	204.4	27.4	96
2020	8,951	2,795	42,339	4,367	1,278	211.4	24.7	92
2019	8,569	2,674	37,330	6,002	1,460	229.6	28.2	96
2018	9,028	2,816	51,271	5,279	1,510	176.1	27.1	96

Vessel particulars

IMO number: 9358931
MMSI: 258751000
Ship type: Oil tanker
Gross tonnage: 11,935
Length overall: 144.1 m
Year built: 2007
Flag state: Norway per EU MRV 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: 2026-02-14
Compliance document expires: 2027-06-30

Efficiency against its own type2025

Position 1,396 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 190,435,171 tonne-miles over 20,850 nautical miles.

Reported CO₂ by year

Reported CO₂ in 2025 was 43.4% lower than in 2018, for EU/EEA voyages only.

From 2024 to 2025, emissions fell 35.1% while distance sailed fell 42.8%and CO₂ per nautical mile rose 13.5%.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: 5,190 t
Methane (CH₄): 0.08 t
Nitrous oxide (N₂O): 0.29 t
Under EU ETS: 4,348 t, 85% of total

Observed movementsAIS · Norwegian waters

First seen: 01 Apr 2026
Last seen: 25 Jul 2026
Days observed: 15
Positions: 798
Median speed: 11.4 kn

Its recorded positions span 58.0°N to 60.8°N and 4.4°E to 9.8°E.

257 hourly points from 798 positions. Filled circle first, open circle last; squares are ports for orientation, not calls.

Positions recorded per month

Norwegian Coastal Administration open AIS, Norwegian waters only, 01 Jul 2025 to 27 Jul 2026. A gap means the vessel was not recorded here, not that it was idle or that a transponder was off.

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.
Movements: Norwegian Coastal Administration open AIS extract.

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