Before and after data convincing for container ship nose replacement

By Peter Pospiech at July 23, 2013 04:25
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DNV has gathered before and after operational-performance data which indicate that redesigning the bulbous bow of slow-steaming container ships can produce fuel savings of 5 per cent or above. These ‘nose jobs’ can have a payback time of less than a year. Hyundai Merchant Marine (HMM) operates a series of 8,600 TEU container vessels which were designed and built for high speed. These vessels are actually able to operate at 27 knots. However, today the vessels are “slow steaming”, operating in the range of 15 to 18 knots. At these speeds, the existing bulb is not efficient. In order to quantify the possible savings potential, DNV carried out a comprehensive study to develop a new bulbous bow shape optimised for the expected trading conditions. A cost-benefit assessment was conducted based on the estimated savings and this created the basis for HMM to go ahead with a conversion. Based on input from DNV, Daewoo Ship Engineering Company (DSEC) carried out the struc... [More]

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