Hanwha Ocean (formerly Daewoo Shipbuilding & Marine Engineering) recently announced that it has developed a “Intelligent Ship Technology for Carbon Intensity Index Monitoring”, which measures CO2 emissions during ship operations and provides shipowners with environmentally friendly shipping solutions.
The technology will be applied to a series of very large ammonia carriers (VLACs) recently undertaken by Hanwha Ocean.
The Carbon Intensity Index (CII) is an index that calculates CO2 emissions from ships by using information such as fuel consumption and distance sailed. It is an environmental regulation implemented by the International Maritime Organization from last year. From January 1, 2024, a stricter rating system will be implemented, with the CII grades being divided into five levels from A to E. The A rating represents the lowest carbon intensity, while the E rating represents the highest carbon intensity.
Under the regulation, the International Maritime Organization rates ships from A to E based on the annual CO2 emissions of large ships of 5,000 gross tons or more. If a ship is rated E or D for three consecutive years, it will be restricted from operating until it develops an improvement plan and is re-certified.
The monitoring technology developed by Hanwha Ocean, in combination with Hanwha Smart Ship Solution& Service (HS4), is able to automatically calculate the CII of currently operating ships. Particularly, it is possible to predict a ship’s current rating, its next voyage rating and its year-end rating.
The technology also offers a range of optimal sailing solutions, such as speeds and routes with lower CO2 emissions. By linking the HS4 to various fuel saving devices (ESD), such as rotor sails, this environmentally friendly solution is expected to increase satisfaction from ship owners.
In addition, Hanwha Ocean is applying various environmentally friendly technologies such as Air Lubrication System (ALS) and Shaft Generator Motor System (SGM) to the shipbuilding industry to help shipowners achieve economic operations and cope with environmental regulations.