Container ship · Liberia flag · built 2014

HOUSTON EXPRESS: CO₂ emissions 2018–2025

IMO 9667150 EU ETS8 reporting years

CO₂ reported 2025: 36,982 t
Fuel burned: 11,858 t
Distance: 46,229 nm
Time at sea: 2,961 h
Emitted at berth: 2% of total
Share of year under way: 34%
Gross tonnage: 148,667

HOUSTON EXPRESS against its type

Built in 2014, it is 6 years newer than the median container ship on this register, which was built in 2008 (3,088 vessels with a known build year). At 148,667 gross tonnage it is larger than 90% of the other 3,000 container ships with a recorded tonnage. It is one of 976 container ships here under the Liberia flag, 27.9% of the 3,495 on the register. The same builder is recorded for 761 other vessels here, 355 of them container ships. Its MRV returns name it THALASSA MANA for 2018–2023 and HOUSTON EXPRESS for 2024–2025. The reported port of registry changed: Singapore (2018), then Monrovia (2019–2025).

Its 36,982 t of CO₂ for 2025 is 2.3 times the median of 16,359 t among the 2,234 container ships on this register that reported for 2025. Per nautical mile it emitted 800.0 kg CO₂, 47% above the type median of 545.6 kg. It logged 2,961 hours at sea against a median of 3,155 hours for its type that year. 2.1% 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 (67,246 t) and the lowest 2022 (22,894 t). Its efficiency percentile within the type went from 9 in 2018 to 10 in 2025 (lower is more efficient). Of the 6 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	36,982	11,858	46,229	2,961	769	800.0	7.0	10
2024	29,644	9,504	34,626	2,075	312	856.1	8.6	20
2023	54,173	17,165	70,152	4,951	1,607	772.2	9.0	19
2022	22,894	7,287	27,810	2,042	3,136	823.2	8.2	14
2021	62,298	19,747	62,134	3,432	3,530	1,002.6	9.2	17
2020	56,007	17,738	56,406	3,195	3,055	992.9	8.6	18
2019	67,246	21,484	78,399	4,760	3,199	857.7	8.3	13
2018	61,242	19,592	66,605	4,018	2,830	919.5	7.9	9

Vessel particulars

IMO number: 9667150
Previously reported as: THALASSA MANA
Ship type: Container ship
Gross tonnage: 148,667
Length overall: 368.4 m
Year built: 2014
Flag state: Liberia per EU MRV 2025
Builder: HD Hyundai Heavy Industries
Port of registry: Monrovia MRV 2025
Technical efficiency (design): EEXI (6.51 gCO₂/t·nm)
Verifier: DNV, Germany
Accreditation: VS-16026-01
Compliance document issued: 2026-02-19
Compliance document expires: 2027-06-30

Efficiency against its own type2025

Position 180 of 1,838 qualifying container ships by EEOI, at the 10th percentile. The dashed line is the type median, 14.2; this vessel reported 7.0.

EEOI divides emissions by transport work, which for this vessel and year was 5,321,165,468 tonne-miles over 46,229 nautical miles.

Reported CO₂ by year

Reported CO₂ in 2025 was 39.6% lower than in 2018, for EU/EEA voyages only.

From 2024 to 2025, emissions rose 24.8% while distance sailed rose 33.5%and CO₂ per nautical mile fell 6.6%.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: 37,564 t
Methane (CH₄): 0.59 t
Nitrous oxide (N₂O): 2.13 t
Under EU ETS: 19,324 t, 52% 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, 5 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.