TonneMiles

Gas carrier · Isle of Man flag · built 2015

BW GEMINI: CO₂ emissions 2019–2025

IMO 9703007 EU ETS2 reporting years

CO₂ reported 2025
8,760 t
Fuel burned
2,866 t
Distance
25,601 nm
Time at sea
1,783 h
Emitted at berth
2% of total
Share of year under way
20%
Gross tonnage
47,342

BW GEMINI against its type

Built in 2015, it is 2 years newer than the median gas carrier on this register, which was built in 2013 (530 vessels with a known build year). At 47,342 gross tonnage it is larger than 78% of the other 525 gas carriers with a recorded tonnage. It is one of 24 gas carriers here under the Isle of Man flag, 3.5% of the 688 on the register. The same builder is recorded for 761 other vessels here, 100 of them gas carriers. The returns for 2019–2025 all give Douglas as port of registry.

Its 8,760 t of CO₂ for 2025 is 47% above the median of 5,974 t among the 363 gas carriers on this register that reported for 2025. Per nautical mile it emitted 342.2 kg CO₂, 34% above the type median of 256.2 kg. It logged 1,783 hours at sea against a median of 1,943 hours for its type that year. 2.4% of its 2025 emissions were at berth; the median for gas carriers was 3.8%. Its efficiency percentile within the type went from 15 in 2019 to 6 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 year2019–2025

Year CO₂ (t) Fuel (t) Distance (nm) At sea (h) At berth (t) kg CO₂/nm EEOI Percentile
2025 8,760 2,866 25,601 1,783 210 342.2 12.7 6
2019 719 227 1,905 140 142 377.3 17.2 15

Vessel particulars

IMO number
9703007
Ship type
Gas carrier
Gross tonnage
47,342
Length overall
225.1 m
Beam
36.6 m
Year built
2015
Flag state
Isle of Man per EU MRV 2025
Builder
HD Hyundai Heavy Industries
Port of registry
DOUGLAS MRV 2025
Technical efficiency (design)
EEXI (5.42 gCO₂/t·nm)
Verifier
DNV, Germany
Accreditation
VS-16026-01
Compliance document issued
2026-01-27
Compliance document expires
2027-06-30

Efficiency against its own type2025

Position 18 of 292 qualifying gas carriers by EEOI, at the 6th percentile. The dashed line is the type median, 27.9; this vessel reported 12.7.

0255075100more efficientless efficientThis vessel: 6th percentile, EEOI 12.7

EEOI divides emissions by transport work, which for this vessel and year was 690,331,757 tonne-miles over 25,601 nautical miles.

Reported CO₂ by year

2019: 719 t20197192025: 8,760 t20258,760

Reported CO₂ in 2025 was 1,118.7% higher than in 2019, for EU/EEA voyages only. No return is recorded for 2020, 2021, 2022, 2023, 2024, so the series has gaps.

From 2019 to 2025, emissions rose 1,118.7% while distance sailed rose 1,243.9%and CO₂ per nautical mile fell 9.3%.That points mainly to how much the vessel sailed, rather than the other.

Where the 2025 emissions occurred

At berthAt berth: 210 t210Within EEA portsWithin EEA ports: 210 t210Voyages to an EEA portVoyages to an EEA port: 4,851 t4,851Voyages from an EEA portVoyages from an EEA port: 3,700 t3,700

Methane, nitrous oxide and EU ETS2025

Total CO₂ equivalent
8,901 t
Methane (CH₄)
0.14 t
Nitrous oxide (N₂O)
0.52 t
Under EU ETS
4,485 t, 51% of total

Sources and how to read this

This page draws on 2 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.

Comparable vesselssister ships and nearest by tonnage