Collision risk based ship preliminary design procedure and case studies

X Tan, J Tao, Dimitrios Konovessis, Evangelos Boulougouris, H.E. Ang

Research output: Chapter in Book/Report/Conference proceedingConference contribution book


This paper proposes a procedure for collision-risk-based preliminary ship design. The procedure is a synthesis of a probabilistic ship-ship collision damage model, common ship design software, and several analytical parametric models. The procedure is implemented in a parametric way such that by systematically varying the parameters related to the conceptual design of the ship, e.g., the main particulars and the inner tank arrangement, the performances of large amount of design variants can be evaluated. Risk is treated as a design objective, alongside other conventional ship design merits, as opposed to a design constraint. Thus trade-offs among different objectives become explicit and can be evaluated quantitatively across the design space to achieve an optimum at an early design phase. The application of the established procedure is discussed through two case studies, one with the preliminary design of a Suezmax oil tanker, and the other one with that of a container ship. The risks of oil spill and in-hold container damage are quantified for the two
ship types respectively. By using the utility function technique with several sets of predefined weighing factors, favored designs under different settings can be identified. The procedure can facilitate decision making when specific design requirements and operational profile are given.
Original languageEnglish
Title of host publicationMarine Design XIII
Subtitle of host publicationProceedings of the 13th International Marine Design Conference (IMDC 2018), June 10-14, 2018, Helsinki, Finland
EditorsPentti Kujala, Liangliang Lu
Place of PublicationBoca Raton, FL
Number of pages9
Publication statusPublished - 11 Jun 2018
Event13th INTERNATIONAL MARINE DESIGN CONFERENCE - Espoo/Helsinki, Helsinki, Finland
Duration: 10 Jun 201814 Jun 2018
Conference number: 13


Abbreviated titleIMDC2018
Internet address


  • ship design
  • collision risk
  • ship to ship collision risk


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