In March 2011 DNV has verified the Energy Efficiency Design Index (EEDI) for the crude oil tanker “Dar Salwa” owned by Kuwait Oil Tanker Company S.A.K. (KOTC). The ship with 318,000 DWT is the first super-large oil tanker that has received the EEDI verification statement from DNV, declaring the ship’s CO2 emission level.
The EEDI value for the vessel “Dar Salwa” is 2.42 g-CO2/(tonne•nm). As a comparison, the EEDI value for the vessel is shown in the figure below, along with the IMO reference line for tankers published in 2011. An EEDI value below the reference line indicates that the ship is designed to emit less CO2 than the average tanker of the same capacity.
“Improving ship energy efficiency has gained a lot of significance in the shipping industry. KOTC voluntarily requested for EEDI verification of their tanker and have already asked DNV to verify the second vessel for the series delivered recently by Daewoo Shipbuildiung & Marine Engineering Co., Ltd” says Mr. Girish, DNV country manager in Kuwait.
Mr. Ali Shehab Ahmad, Head of KOTC Fleet projects division adds that “It is a matter of great pride to us that this is the first Tanker to get this certificate from DNV. It also goes to show the commitment from KOTC towards operating our Vessels in an environment friendly manner and over and above mandatory regulatory requirements. There have been extensive studies carried out by our NB team in collaboration with consultants from DNV on the subject design. It gives us great satisfaction to note that the studies have contributed to ensure that the Vessel's EEDI index is below the baseline value with reference to similar VLCCs.”
Voluntary verification of the EEDI
The EEDI has been introduced by IMO to promote environmental friendly ship design of newbuildings. The IMO EEDI is a benchmarking scheme and an indication of a merchant ship’s CO2 output in relation to its value for the society, and it is expressed as:
The EEDI provides a transparent basis for comparison of the energy efficiency for individual ships and will eventually be benchmarked against an IMO-set requirement. IMO has developed interim guidelines both for the calculation of EEDI and for voluntary verification of the EEDI (MEPC.1/Circ 681 and MEPC.1/Circ 682). At the moment the EEDI verification is voluntary, but it is expected to be made mandatory for newbuildings in the near future.
DNV Class provides EEDI verification services according to the IMO Guidelines. The first EEDI verification by DNV Class was issued in September 2010 to two bulk carriers, built by OSHIMA Shipbuilding Co. in Japan.
DNV actively participates in the development of the IMO EEDI guidelines. Based on experiences obtained during the verification processes, DNV continuously give feedback for further improvement of the guidelines by IMO.
DNV Technical Advisory - EEDI calculation package to be submitted for verification DNV Technical Advisory offers advisory services to assist designers, yards, owners and operators to implement the Energy Efficiency Design Index. The main deliverable is a technical document package that can be submitted for verification. The services cover the complete span in the EEDI calculation process, to be applied both in the design and final stage of construction: • Gap Assessment • EEDI Calculation • EEDI Improvement • EEDI Technical File |
Date: 14 April 2011