Bulk carrier · Portugal flag · built 2017

NORDTAJO

IMO 9741865 MMSI 255806297EU ETS8 reporting years

CO₂ reported 2025: 2,764 t
Fuel burned: 882 t
Distance: 13,745 nm
Time at sea: 1,278 h
Emitted at berth: 1% of total
Share of year under way: 15%
Gross tonnage: 25,546

Vessel particulars

IMO number: 9741865
MMSI: 255806297
Ship type: Bulk carrier
Gross tonnage: 25,546
Length overall: 180.0 m
Beam: 32.0 m
Year built: 2017
Flag state: Portugal
Builder: Jiangsu Hantong Ship Heavy Industry Co., Ltd.
Port of registry: Madeira
Technical efficiency (design): EEDI (4.7 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: 2026-03-26
Compliance document expires: 2027-06-30

Flag state is derived from rapportert, not reported directly, and reflects the registry at the time of reporting.

Efficiency against its own type2025

Position 1,785 of 3,241 qualifying bulk carriers by EEOI, at the 55th percentile. The dashed line is the type median, 7.6; this vessel reported 8.0.

EEOI divides emissions by transport work, which for this vessel and year was 347,275,126 tonn-nmover 13,745 nautical miles.

Reported CO₂ by year

Between 2018 and 2025 reported CO₂ rose by 45.8%.

From 2024 to 2025, emissions fell 13.4% while distance sailed fell 11.2%and CO₂ per nautical mile fell 2.5%.That points mainly to how much the vessel sailed, rather than the other.

Annual returns2018–2025

Year	CO₂ (t)	Fuel (t)	Distance (nm)	At sea (h)	At berth (t)	kg CO₂/nm	EEOI	Percentile
2025	2,764	882	13,745	1,278	32	201.1	8.0	55
2024	3,192	1,019	15,474	1,359	133	206.3	8.2	55
2023	5,296	1,693	24,524	2,077	569	215.9	7.0	37
2022	4,171	1,318	19,520	1,608	296	213.7	12.0	81
2021	5,852	1,849	23,681	2,024	274	247.1	8.7	54
2020	1,654	521	5,865	867	27	281.9	13.4	90
2019	7,237	2,315	36,292	3,543	304	199.4	7.1	36
2018	1,896	604	9,097	863	14	208.4	7.8	44

Where the 2025 emissions occurred

Methane, nitrous oxide and EU ETS2025

Total CO₂ equivalent: 2,808 t
Methane (CH₄): 0.04 t
Nitrous oxide (N₂O): 0.16 t
Under EU ETS: 1,620 t, 59% of total

Laden voyages2025

CO₂ on laden voyages: 2,732 t, 99% of total
Fuel, laden: 872 t
CO₂ per nm, laden: 198.8 kg

The share carried on laden voyages separates productive sailing from ballast legs. For tankers, bulkers and ro-ro vessels that split is the operational question; a low laden share means the ship spent much of the year moving empty.

Observed movementsAIS · Norwegian waters

First seen: 11 Jun 2026
Last seen: 02 Jul 2026
Days observed: 22
Positions: 1,025
Median speed: 10.6 kn

400 points sampled hourly from 1,025 recorded positions. The filled circle is the first observed position, the open one the last. Named squares are ports, shown for orientation; they are not recorded calls.

Positions recorded per month

Norwegian waters only, 01 Jul 2025 to 27 Jul 2026. A gap here means the vessel was not recorded in that area. It is not evidence that the vessel was idle, and not evidence that a transponder was switched off. Voyages elsewhere are outside this dataset.

Verifier history

From reporting year	Verifier	Accredited in
2018	DNV	Germany
2021	EMICERT	Greece
2022	AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD)	Greece

A change of accredited verifier is shown because it matters for audit and data continuity. It is not in itself a sign of anything being wrong.

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).
Movements: Norwegian Coastal Administration open AIS extract.

What this page is built on

Reporting years: 8
Ranked by efficiency: yes
Vessel particulars: 5 of 5
Movement data: yes
Name history: none recorded
Photograph: none licensed
Sanctions record: none
Inspection record: none in US waters

Caveats that apply to every vessel page

EEOI above 100,000 is withheld. Those values come from returns where reported transport work is near zero, which makes the ratio meaningless rather than extreme. Median across the dataset is around 12.

Emission categories overlap. In the MRV return, emissions at berth are also counted inside the voyage legs, so the categories do not sum to the total. They are shown side by side rather than stacked for that reason.

Distance is derived, intensity is reported. The MRV return publishes CO₂ per nautical mile but not the distance itself, which is null in all 106,564 rows of the source. The distance column is therefore filled from the ranking step, which reconstructs it, and is blank for years where a vessel was not ranked. That is why a row can show an intensity without a distance.

Percentile is within type and year. It is the vessel's position among qualifying ships of the same type that year, where lower is more efficient. A blank means the vessel did not qualify for ranking that year.

Sister ships share a builder, a type and a build year within two years of this vessel. That holds hull and machinery roughly constant and leaves operation as the variable, which is why they are listed before nearest-by-tonnage.

Methane and nitrous oxide start in 2024. They were not reported before that period, so earlier years cannot be compared against them.

Technical efficiency is a design figure fixed at construction. A vessel can hold a good index and still emit heavily by sailing fast, waiting at anchor or carrying little.

Inspection records cover United States waters only. An empty record is not evidence of a clean history elsewhere.

Empty means unreported, never zero. Nothing here is modelled, estimated or interpolated. See the methodology.

Something wrong on this page? See corrections. We do not hold the source registers and cannot amend them, but we will fix anything we have got wrong in reproducing them.