Container ship · Japan flag · built 2015

MACKINAC BRIDGE: CO₂ emissions 2018–2025

IMO 9689603 EU ETS8 reporting years

CO₂ reported 2025: 23,781 t
Fuel burned: 7,619 t
Distance: 38,158 nm
Time at sea: 3,330 h
Emitted at berth: 2% of total
Share of year under way: 38%
Gross tonnage: 152,297

MACKINAC BRIDGE against its type

Built in 2015, it is 7 years newer than the median container ship on this register, which was built in 2008 (3,088 vessels with a known build year). At 152,297 gross tonnage it is larger than 92% of the other 3,000 container ships with a recorded tonnage. It is one of 22 container ships here under the Japan flag, 0.6% of the 3,495 on the register. Its MRV returns name it MACKINAC BRIDGE for 2018–2019 and ONE MACKINAC for 2020–2025. The returns for 2018–2025 all give KOBE as port of registry.

Its 23,781 t of CO₂ for 2025 is 45% above the median of 16,359 t among the 2,234 container ships on this register that reported for 2025. Per nautical mile it emitted 623.2 kg CO₂, 14% above the type median of 545.6 kg. It logged 3,330 hours at sea against a median of 3,155 hours for its type that year. 1.9% of its 2025 emissions were at berth; the median for container ships was 3.2%. Across 8 years with reported emissions, the highest was 2019 (44,018 t) and the lowest 2023 (11,896 t). Its efficiency percentile within the type went from 9 in 2018 to 15 in 2025 (lower is more efficient). Of the 4 comparable vessels listed below with a 2025 return, 0 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	23,781	7,619	38,158	3,330	462	623.2	7.6	15
2024	26,715	8,554	—	3,428	0	662.1	—	—
2023	11,896	3,804	15,192	1,369	392	783.1	7.9	14
2022	12,069	3,863	14,719	1,060	1,579	820.0	9.0	16
2021	22,547	7,214	24,709	1,451	1,096	912.5	9.7	19
2020	31,867	10,127	36,246	2,762	1,296	879.2	8.1	15
2019	44,018	14,115	55,165	3,815	1,165	797.9	7.5	10
2018	31,458	10,078	40,390	2,765	1,389	778.9	7.9	9

Vessel particulars

IMO number: 9689603
Previously reported as: ONE MACKINAC
Ship type: Container ship
Gross tonnage: 152,297
Length overall: 365.9 m
Year built: 2015
Flag state: Japan per EU MRV 2025
Port of registry: Kobe MRV 2025
Technical efficiency (design): EEXI (8.74 gCO₂/t·nm)
Verifier: Nippon Kaiji Kyokai, Japan
Accreditation: VS-21325-01
Compliance document issued: 2026-03-27
Compliance document expires: 2027-06-30

Efficiency against its own type2025

Position 271 of 1,838 qualifying container ships by EEOI, at the 15th percentile. The dashed line is the type median, 14.2; this vessel reported 7.6.

EEOI divides emissions by transport work, which for this vessel and year was 3,137,287,599 tonne-miles over 38,158 nautical miles.

Reported CO₂ by year

Reported CO₂ in 2025 was 24.4% lower than in 2018, for EU/EEA voyages only.

From 2024 to 2025, emissions fell 11.0% and CO₂ per nautical mile fell 5.9%.Distance is missing for at least one of the two years, so activity and efficiency cannot be separated here.

Where the 2025 emissions occurred

Methane, nitrous oxide and EU ETS2025

Total CO₂ equivalent: 24,155 t
Methane (CH₄): 0.38 t
Nitrous oxide (N₂O): 1.37 t
Under EU ETS: 3,172 t, 13% 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, 4 of 5 vessel particulars, a name history and a licensed photograph. Not found in the sources for this vessel: AIS movements in Norwegian waters, 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.