On Making Operational Decisions With Taking Into Account Value Of Operation Applied To Ship Main Propulsion Engine As An Example

Objectivity and rationality in making decision, assumed optimal in given conditions, forces to apply an evaluating (quantitative) approach to the problem, hence to search for such their parameters (indices) which, in a given decision situation, can be deemed most adequate. And, to precisely determine the task it is necessary to specify also its duration time, apart from conditions in which it will be realized.. When considering propulsion engine, i.e. the main element of ship propulsion system, especially important becomes not only the problem which amount of energy could be at one’s disposal but also within which time interval it could be delivered. Therefore apart from applying the commonly used reliability indices, it seems sensible to consider the operation in such evaluating approach as it could be determined by energy and time simultaneously. The presented method may be deemed a valuable supplement to the ways have been applied so far of description of reliability features of the driving system, considered crucial for ship power plant and ship itself.