Versatility vs. retrofittability tradeoff in design of non-transport vessels

OCEAN ENGINEERING

卷:167

Article

Rehn, Carl Fredrik¹  Agis, Jose Jorge Garcia^1,2  Erikstad, Stein Ove¹  de Neufville, Richard³ 

[1] Norwegian Univ Sci & Technol NTNU, Dept Marine Technol, Otto NieClsens Veg 10, N-7052 Trondheim, Norway

[2] Ulstein Int AS, NO-6067 Ulsteinvik, Norway

[3] MIT, IDSS, E18-407A,50 Ames St, Cambridge, MA 02142 USA

关键词: Ship design;    Retrofittability;    Versatility;    Flexibility;    Uncertainty;   

DOI  :  10.1016/j.oceaneng.2018.08.057

来源: Elsevier

【 摘 要 】

In this paper, we study the relationship between economic performance and flexibility for non-transport vessels. More specifically, we investigate the difference between two means of achieving flexibility: retrofittability and versatility, i.e., the ability of a vessel to satisfy diverse needs with or without change of physical form, respectively. A model is presented to study this relationship, where we first generate design alternatives with relevant, flexible properties before we subsequently evaluate the design alternatives based on their expected discounted economic lifecycle performance. The evaluation model is based on a two-level decomposition of the planning horizon to handle temporal complexity, using scenario planning and Epoch-Era analysis (EEA) for long-term strategic considerations, and Monte Carlo simulation and optimization for medium-term tactical ship deployment. The proposed model is applied to an offshore construction ship design case. Findings indicate that retrofittability can increase economic performance significantly for non-transport vessels operating in an uncertain heterogeneous context.

【 授权许可】

Free