A class R estimate is a rough order of magnitude estimate.It is applicable for designs when the design information that is being used is not of feasibility standards quality.There is limited weight information known and the cost estimate uses old or generalized adjustment factors. Some
examples are:
* a new design of an unconventional ship platform.
* a ship platform that is initially designed to carry many unconventional or developmental equipments.
* a ship designed beyond the current state of the art.
A class X estimate is applied to situations where the design is:
* not developed by the NAVSEA Cost Engineering and Industrial Analysis Division or the NAVSEA Ship Design Integration and Engineering Directorate,Engineering Office, through the normal estimating process
* provided by other commands or agencies
* directed by higher authority.
TABLE 1. NAVSEA SHIP COST ESTIMATE CLASSIFICATION SYSTEM