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Future feeder – DNV GL presents HMD with Approval in Principle for Con-Green 2000 design

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DNV GL presented Hyundai Mipo Dockyard (HMD) with an Approval in Principle (AiP) recognizing the technical feasibility of the new Con-Green 2000 vessel design under the new DNV GL rules. From left to right: Ole Grøne, Senior Vice President, Promotion & Sales at MAN Diesel &Turbo, Trond Hodne, DNV GL Business Director Maritime, Dug Ki Min, Vice President of the Initial Planning and Initial Hull Design Dept. at HMD, and Henning Kuhlmann, Managing Director at Becker Marine Systems
Today at the SMM trade fair in Hamburg, DNV GL presented Hyundai Mipo Dockyard (HMD) with an Approval in Principle (AiP) recognizing the technical feasibility of the new Con-Green 2000 vessel design under the new DNV GL rules. The Con-Green 2000 project brought together partners HMD, MAN Diesel & Turbo, Becker Marine Systems, and DNV GL to develop a highly efficient, reliable and economic feeder design.
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Feeder vessels are the unsung heroes of the container market and have become increasingly important in a world of 18,000, 19,000 and even 20,000 TEU giant ultra large container ships. “With the Con-Green 2000 project we wanted to define the next generation of feeder vessels, with maximum fuel efficiency, high quality, reliability and lower maintenance costs and showcase the capabilities of Hyundai Mipo Dockyard,” says C. G. Lim, Team Leader and Deputy General Manager, ECO Hull Form Development Team at HMD.

The hull form, propeller, general arrangement, midship section and scantling have been designed and optimized by HMD, using their own proprietary software Hull Form Optimizer of Mipo (HOM) and Propeller Optimizer of Mipo (POM). The hull design is based on the new DNV GL rule set and the new IACS S11A and S34 requirements. The design also incorporates the new Cross Over Rudder (COR) developed by Becker Marine Systems (BMS) as well the latest version of the 6S60ME-C10.5 main engine from MAN Diesel & Turbo (MDT).

“BMS have a long history of cooperation with HMD and we were very pleased to have been asked to take part in this interesting project,” said Henning Steffen, Naval Architect and Sales Manager from BMS.

“At MDT we are always interested in taking part in projects which can contribute to the development of innovative designs that benefit builders, owners and operators, says Sang Bae Cha, Sales Promotion, MAN Diesel & Turbo Korea.

In preparing the AiP, DNV GL has worked with HMD to verify the performance of the design and assess the compliance of the design with environmental requirements, including the Energy Efficiency Design Index (EEDI). DNV GL also provided technical support on the basic design in terms of stability, cargo loading/unloading, and the machinery arrangement concept and accommodation.

“The feeder market is continuing to grow in importance, especially in the intra-Asian sector, and we are seeing a wave of innovation in this area as yards and designers look to maximize efficiency and reduce environmental impacts,” says Jai Oh Sun, project manager for the Con-Green project at DNV GL – Maritime. “We are very pleased that HMD has chosen us to participate in the project, trusting our expertise in the container sector. We look forward to the future development of the design and its success in the market.”

The results of the hull and propeller optimisation were very promising with power savings of approximately 7.5 per cent. Model tests on the design were carried out in June and confirmed the added performance, with the speed at NCR (nominal continuous rating) power with 15 per cent sea margin improved by about 0.55 knots in comparison to the original design. Daily fuel oil consumption has also been improved by 12 to 16 per cent depending on the vessel’s speed. The attained EEDI of Con-Green 2000 is 15.512. This represents a value 10 per cent lower than similar sized vessels and fulfils the phase 3 requirements of the regulations.

HMD Con-Green 2500 and HMD Con-Green 3000 are now under development and will be released soon.

Read more about Con-Green in the latest issue of DNV GL’s Maritime Impact magazine available in our publication area.