Friday, August 20, 2010

New Bulk Carrier Design Reduces Freight Costs

Continuing Evolution to Reduce Fuel Consumption
Shipping News Feature

CHINA – DENMARK – UK - Regular readers will know that the Handy Shipping Guide takes a special interest in products and innovation which make life in the shipping and logistics industry cleaner and safer. Ship design can offer much to reduce the carbon footprint of all types of vessels and whether it is a 'sharkskin’ coating or rudder, engine and superstructure design, hull type and power source can have a profound effect on a vessels performance.

Now international cooperation by the Jiangmen Nanyang Ship Engineering, Shanghai Bestway Marine Engineering Design, UK based Stone Marine Propulsion and Danish shipping line Norden A/S has resulted in a modified design for two new build Handysize dry cargo carriers ordered by Norden which the group say will cut fuel consumption by 11% against traditional designs, with the resultant reduction in carbon emissions.

Speaking of the innovations, which include a larger main engine and propeller than normal Senior Vice President Lars Lundegaard, Head of Norden’s Technical Department said:

“According to our calculations the investments in redesign will be paid back in 4 years by the savings in fuel consumption. In addition to this, we expect that the design will increase the market value of the vessels. This initiative is a text book example of how environmental and economic concerns walk hand in hand, which is why we have had no doubts whether we should invest in this project or not.“

Senior New Building Manager Alex Hjortnæs from the Newbuilding Section in the Technical Department is the man behind the idea for the modified design. In short, the redesign consists of a larger main engine, which is optimised to a lower rotation speed, and a larger propeller. The design is developed from the principle that a large propeller turning slowly has a higher efficiency compared to a small propeller turning quickly.

The two new ships should be ready for delivery at the turn of the year 2011/2012 and will also include other technical improvements to enhance their performance including new antifouling to reduce friction which overall Norden calculate will improve economy 15.4% overall.

Photo: A close up of the redesigned propeller