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Multi-objective optimization of oil tanker design

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Abstract

Parametric optimization was applied to a double-hull AFRAMAX tanker design in order to reduce oil-outflow probability and increase cargo carrying capacity, and the results are presented here. A multi-criteria optimization procedure was set up in modeFrontier ® using the cargo volume, the mean oil-outflow parameter and the steel weight of the cargo block as the objective functions. Calculations are based on a parametric geometric model of the ship created in NAPA ®, and on a structural model created in POSEIDON ®. Integration of the above software packages leads to an automated optimization procedure that provides improved feedback to the designer regarding the trade-off between the various design parameters and optimization criteria involved. The results obtained suggest notable improvements in transport capacity and oil-outflow performance for known, well-established yard designs. The presented work derives from a joint industrial project between Germanischer Lloyd (GL) and the Ship Design Laboratory of the National Technical University of Athens (NTUA-SDL), which continues the work done and coordinated by NTUA-SDL within the SAFEDOR project on the same subject.

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Notes

  1. An optimization with respect to CSR is planned for presentation in the future.

  2. The minimum spacing according to MARPOL is 2.0 m; however in the research presented here, this semi-empirical MARPOL limit was not considered a hard constraint, but challenged in the framework of a risk-based design/regulation and approval procedure, as promoted by the project SAFEDOR [11, 12].

  3. With a 2.5 m side clearance/double-bottom height and an oil-outflow index of about 0.010 (compared to the corresponding MARPOL limits of 2.0 m and 0.015, respectively), the reference design is very environmentally friendly; however, the design shows room for improvement with respect to both cargo carrying capacity and steel weight.

  4. Which is a successful practical design, implemented by a major shipbuilder.

References

  1. Germanischer Lloyd (2008) POSEIDON ND v.8.119. Germanischer Lloyd, Hamburg (see http://www.gl-group.com/)

  2. Marine Environment Protection Committee (2004) Resolution MEPC.117(52): Amendments to the annex of the protocol of 1978 relating to the international convention for the prevention of pollution from ships, 1973 (MEPC 52nd Session, Agenda Item 24, Annex 2, adopted on October 15). International Maritime Organization, London

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  11. SAFEDOR (2005) Integrated project on design, operation and regulation for safety (EU-funded project, contract TIP4-CT-2005-516278). Germanischer Lloyd, Hamburg (see http://www.safedor.org)

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Authors and Affiliations

  1. Ship Design Laboratory, School of Naval Architecture and Marine Engineering, National Technical University of Athens, Athens, Greece

    Apostolos Papanikolaou, George Zaraphonitis & Evangelos Boulougouris

  2. Germanischer Lloyd AG, Hamburg, Germany

    Uwe Langbecker, Sven Matho & Pierre Sames

Authors
  1. Apostolos Papanikolaou
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  2. George Zaraphonitis
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  3. Evangelos Boulougouris
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  4. Uwe Langbecker
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  5. Sven Matho
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  6. Pierre Sames
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Correspondence to Apostolos Papanikolaou.

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Papanikolaou, A., Zaraphonitis, G., Boulougouris, E. et al. Multi-objective optimization of oil tanker design. J Mar Sci Technol 15, 359–373 (2010). https://doi.org/10.1007/s00773-010-0097-7

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  • DOI: https://doi.org/10.1007/s00773-010-0097-7

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