Vehicle carrier · Panama flag · built 2008

TRANQUIL ACE: CO₂ emissions 2018–2025

IMO 9561253 EU ETS8 reporting years

CO₂ reported 2025: 10,146 t
Fuel burned: 3,253 t
Distance: 29,755 nm
Time at sea: 1,820 h
Emitted at berth: 2% of total
Share of year under way: 21%
Gross tonnage: 58,939

TRANQUIL ACE against its type

Built in 2008, it is the same age as the median vehicle carrier on this register (build year 2008, 595 vessels with a known build year). At 58,939 gross tonnage it is smaller than 50% of the other 571 vehicle carriers with a recorded tonnage. It is one of 177 vehicle carriers here under the Panama flag, 24.8% of the 713 on the register. The same builder is recorded for 69 other vessels here, 28 of them vehicle carriers. The reported port of registry changed: GEORGE TOWN (2018–2020), then Panama (2021–2025).

Its 10,146 t of CO₂ for 2025 is 43% above the median of 7,074 t among the 514 vehicle carriers on this register that reported for 2025. Per nautical mile it emitted 341.0 kg CO₂, 10% above the type median of 309.1 kg. It logged 1,820 hours at sea against a median of 1,639 hours for its type that year. 1.6% of its 2025 emissions were at berth; the median for vehicle carriers was 3.1%. Across 8 years with reported emissions, the highest was 2018 (11,700 t) and the lowest 2020 (3,940 t). Its efficiency percentile within the type went from 31 in 2018 to 44 in 2025 (lower is more efficient). Of the 8 sister ships listed below with a 2025 return, 8 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	10,146	3,253	29,755	1,820	164	341.0	48.0	44
2024	4,782	1,531	—	838	0	359.5	—	—
2023	7,707	2,469	21,480	1,266	208	358.8	53.9	51
2022	9,680	3,068	27,929	1,791	186	346.6	60.2	58
2021	4,972	1,574	14,729	928	146	337.6	67.0	64
2020	3,940	1,248	13,167	887	104	299.2	55.3	49
2019	8,486	2,707	26,070	1,868	229	325.5	52.3	33
2018	11,700	3,739	38,258	2,588	267	305.8	55.2	31

Vessel particulars

IMO number: 9561253
Ship type: Vehicle carrier
Gross tonnage: 58,939
Length overall: 200.0 m
Year built: 2008
Flag state: Panama per EU MRV 2025
Builder: Minaminippon Shipbuilding
Port of registry: Panama MRV 2025
Technical efficiency (design): EEXI (14.9 gCO₂/t·nm)
Verifier: Nippon Kaiji Kyokai, Japan
Accreditation: VS-21325-01
Compliance document issued: 2026-03-13
Compliance document expires: 2027-06-30

Efficiency against its own type2025

Position 187 of 423 qualifying vehicle carriers by EEOI, at the 44th percentile. The dashed line is the type median, 51.7; this vessel reported 48.0.

EEOI divides emissions by transport work, which for this vessel and year was 211,429,464 tonne-miles over 29,755 nautical miles.

Reported CO₂ by year

Reported CO₂ in 2025 was 13.3% lower than in 2018, for EU/EEA voyages only.

From 2024 to 2025, emissions rose 112.2% and CO₂ per nautical mile fell 5.1%.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: 10,306 t
Methane (CH₄): 0.16 t
Nitrous oxide (N₂O): 0.59 t
Under EU ETS: 5,108 t, 50% 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.