GL and NTU Athens win Greek Shipping Award

08 Dec 2009

The design work for the optimisation of oil tankers in terms of efficiency and safety carried out jointly by Germanischer Lloyd (GL) and the National Technical University of Athens (NTUA) won the Technical Achievement Award of the Lloyd's List Greek Shipping Awards.

Based on earlier work performed by NTUA within the EU-funded project SAFEDOR, GL and NTUA optimised the novel oil tanker design for maximum cargo capacity, minimum hull steel mass and lowest oil outflow probability. After examining over 17,000 design variants, one design offered the expected combination of benefits. This optimal design features a 6x3 cargo oil tank configuration, non-uniform tank volumes lengthwise and increased double bottom heights as well as increased double hull widths in the bow area.

"The main objective of the research work is the development of innovative tanker designs with optimised characteristics with respect to cargo transport efficiency and environmental safety issues using a novel holistic tanker design procedure," explains Dr. Pierre C. Sames, GL's Senior Vice President Strategic Research and Development. "Therefore, both from the economy and safety point of view, the resulting designs appear attractive to the tanker shipping industry."

"For the design concept development stage, a full parametric multi-objective design optimisation platform has been developed by using genetic algorithms and taking into account probabilistic oil outflow calculation methods for side and bottom damages and a structural design assessment (with corrugated or flat bulkheads) according to GL's rules using the scantling tool POSEIDON," states Prof. Dr.-Ing. Apostolos Papanikolaou, Director Ship Design Laboratory of NTUA.

The award for the novel oil tanker design honours the successful joint research work of GL and NTUA and is in particular a demonstration of the design potentials which can be unlocked with systematic optimisation approaches. With this award, GL and NTUA are even more determined to target the next phase of the project which will additionally explore hull form optimisation and unloading procedures.

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