RightShip has announced the launch of its updated greenhouse gas (GHG) 2.0 rating – the latest version of its industry leading maritime decarbonisation product.
The new version features an updated and improved methodology built in line with International Maritime Organization (IMO) regulatory developments such as EEXI and has been subject to rigorous review and validation from industry with the aim to support the drive for decarbonisation as efficiently and effectively as possible.
One of the key approaches to reaching this target is by facilitating and incentivising more efficient vessel design.
RightShip’s existing GHG Rating methodology is based on two main sources: the IMO’s Energy Efficiency Design Index (EEDI), which measures the theoretical CO2 emissions per tonne/nautical mile travelled of ships built since 2013, and RightShip’s complementary Existing Vessel Design Index (EVDI), which measures the same output for pre-EEDI vessels and post-2013 built retrofitted vessels.
Based on ship design, the IMO’s Energy Efficiency Existing Ship Index (EEXI) estimates the energy efficiency of vessels in grams of carbon dioxide (gCO2)/tonne.newton metre (nm).
RightShip’s new GHG 2.0 Rating product is the only environmental rating that incorporates all three indicators.
Vessels are classified into peer groups based on vessel type and capacity, and then rated A-E depending on their emissions performance in comparison to their peers.
As a result, the GHG 2.0 Rating keeps pace with the industry as new vessels enter service, old ones retire, current fleet is modernised with energy-saving techniques, and emissions improve.
Christopher Saunders, Chief Product Officer at RightShip, said: “The GHG Rating is regarded by many as the gold-standard for vessel environmental ratings, and we have updated the methodology to maintain that high standard.
“As regulations and technologies evolve, so must we to ensure we are doing everything we can to enable and encourage more sustainable vessel design and deployment.”
EEXI approval is normally accomplished when a vessel’s first annual, intermediate, or renewal IAPP survey is required after this date. As a result, the availability of data necessary to generate the new rating has been staggered.
The GHG 2.0 Rating distinguishes itself by the application of operational measures such as engine power limitation (EPL).
RightShip applies the Admiralty principle to eliminate the influence of such measures on the rating because they may be overridden and are not inherent in ship construction.
This guarantees that vessels be properly evaluated based on their design potential, while operational metrics will be incorporated in the IMO’s Carbon Intensity Indicator (CII) regulation, which will be available on the RightShip platform in the future.