Chemical tanker · Norway flag · built 2012

RYSTRAUM: CO₂ emissions 2018–2025

IMO 9391000 MMSI 258858000EU ETS8 reporting years

CO₂ reported 2025: 8,196 t
Fuel burned: 2,557 t
Distance: 51,046 nm
Time at sea: 4,639 h
Emitted at berth: 10% of total
Share of year under way: 53%
Gross tonnage: 7,243

RYSTRAUM against its type

Built in 2012, it is 2 years newer than the median chemical tanker on this register, which was built in 2010 (1,951 vessels with a known build year). At 7,243 gross tonnage it is smaller than 91% of the other 1,899 chemical tankers with a recorded tonnage. It is one of 95 chemical tankers here under the Norway flag, 4.1% of the 2,344 on the register. The same builder is recorded for 40 other vessels here, 29 of them chemical tankers. The returns for 2018–2025 all give Bergen as port of registry.

Its 8,196 t of CO₂ for 2025 is 48% above the median of 5,531 t among the 1,484 chemical tankers on this register that reported for 2025. Per nautical mile it emitted 160.6 kg CO₂, 36% below the type median of 250.2 kg. It logged 4,639 hours at sea against a median of 2,106 hours for its type that year. 10.1% of its 2025 emissions were at berth; the median for chemical tankers was 6.6%. Across 8 years with reported emissions, the highest was 2018 (12,477 t) and the lowest 2025 (8,196 t). Its efficiency percentile within the type went from 90 in 2018 to 87 in 2025 (lower is more efficient). Of the 4 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	8,196	2,557	51,046	4,639	828	160.6	33.4	87
2024	10,443	3,257	53,477	4,837	959	195.3	47.6	95
2023	10,705	3,339	56,097	5,178	1,127	190.8	49.5	96
2022	8,675	2,706	45,739	4,356	719	189.7	48.8	96
2021	10,119	3,156	53,336	4,853	719	189.7	46.3	95
2020	10,930	3,427	56,835	5,009	932	192.3	44.4	94
2019	11,659	3,694	62,373	6,458	920	186.9	42.4	93
2018	12,477	3,953	66,674	7,183	712	187.1	39.8	90

Vessel particulars

IMO number: 9391000
MMSI: 258858000
Ship type: Chemical tanker
Gross tonnage: 7,243
Length overall: 129.0 m
Beam: 19.2 m
Year built: 2012
Flag state: Norway per EU MRV 2025
Builder: 3. Maj
Port of registry: Bergen MRV 2025
Ice class: IA Super
Technical efficiency (design): EEXI (10.96 gCO₂/t·nm)
Time in ice: 10 h
Verifier: DNV, Germany
Accreditation: VS-16026-01
Compliance document issued: 2026-03-24
Compliance document expires: 2027-06-30

Efficiency against its own type2025

Position 1,172 of 1,348 qualifying chemical tankers by EEOI, at the 87th percentile. The dashed line is the type median, 14.4; this vessel reported 33.4.

EEOI divides emissions by transport work, which for this vessel and year was 245,623,614 tonne-miles over 51,046 nautical miles.

Reported CO₂ by year

Reported CO₂ in 2025 was 34.3% lower than in 2018, for EU/EEA voyages only.

From 2024 to 2025, emissions fell 21.5% while distance sailed fell 4.5%and CO₂ per nautical mile fell 17.8%.That points mainly to how efficiently it sailed, rather than the other.

Where the 2025 emissions occurred

Methane, nitrous oxide and EU ETS2025

Total CO₂ equivalent: 8,322 t
Methane (CH₄): 0.13 t
Nitrous oxide (N₂O): 0.46 t
Under EU ETS: 7,714 t, 94% of total

Observed movementsAIS · Norwegian waters

First seen: 06 Aug 2025
Last seen: 23 Jul 2026
Days observed: 108
Positions: 11,237
Median speed: 11.6 kn

Its recorded positions span 58.0°N to 71.0°N and 4.4°E to 23.7°E.

400 hourly points from 11,237 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.