Abstract
ABSTRACTThe concept of marginal cost, i.e., the cost of one additional unit at some specified level, can be applied to naval ship design with considerable benefit. Weight, space, electric power and manning are commodities by which most subsystems and equipments influence ship size and cost. By developing marginal cost factors about a base‐line design for these commodities, it is possible to estimate the shipboard cost influence of a wide variety of subsystems without the necessity of a specific design studies. Answers can be provided in minutes rather than days or weeks. Additionally, marginal cost factors provide the naval architect with a new insight into his design, a guide for trading between commodities, and a means of quickly assessing his capability to reach a target cost.This paper shows the development of marginal cost factors for a Destroyer Escort of about 3,500 tons full load displacement. Potential problem areas are discussed and an example of marginal cost application is offered.
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