الفهرس 
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Abstract
Due to the sophisticated nature of the design and construction processes involved in the shipping industry, shipbuilding companies are constantly looking for ways to increase productivity while using lesser costs. The production stage of the shipbuilding process had the greatest value in terms of expenses, while more than half of these costs are defined through the decisions which are made in the earlier design stage. So, the aim of this thesis is to construct a ship conceptual design taking into account processes’ capabilities and limitations of the production stage in order to lower the manufacturing costs. The Design for Production, (DFP) is the concept which is going to be implemented for the sake of achieving this aim by the approach of reducing the number of scantling variables. The process used involves applying an optimization process to an existing ship design with the goal of lowering costs and weight while adhering to the restriction of stress limitation, which is verified using a parametric model with each change in the values of the variables. The outcome of this procedure gives the decision makers a range of design alternatives from which they can select the most appropriate one.