Tool for Estimating Greenhouse Gas Emissions from LNG Shipping

Trip

Round Trip Distance km

Days Maneuvering

Days Docked

Return Ballast Fraction

Carrier

GWP Horizon 20 Years 100 Years

Fleet

Fleet Year

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(No Fleet Selected)

Choose an IGU catalog year.

Advanced Options

The default rates below are from the measurement campaign on the Gaslog Galveston (174,000 m³), and are scaled to each carrier by its tank surface area.

Unadjusted Boil-off Gas (BOG)

	Propulsion	Generators
Underway ^per⁄_km	Propulsion BOG underway	Generators BOG underway
Maneuvering ^per⁄_day	Propulsion BOG maneuvering	Generators BOG maneuvering
Docked ^per⁄_day	Propulsion BOG docked	Generators BOG docked

Species Fractions

Methane (CH₄)

Pentane (C₅H₁₂)

Butane (C₄H₁₀)

Propane (C₃H₈)

Ethane (C₂H₆)

Hexane+ (C₆H₁₄+) The remainder

Unadjusted Methane Slip

	Propulsion	Generators	GCU
Underway ^per⁄_km		Generators slip underway	GCU slip underway
Maneuver ^per⁄_day	Propulsion slip maneuvering	Generators slip maneuvering	GCU slip maneuvering
Docked ^per⁄_day	Propulsion slip docked	Generators slip docked	GCU slip docked

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