HUMAN FACTORS STUDY OF THE USN MARK II HANDHELD SEXTANT.
DUNLAP AND ASSOCIATES INC DARIEN CONN
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A technical summary is presented of the research conducted and the design recommendations resulting from a human factors study of the Navys handheld sextant. Recommendations for further research are presented at the conclusion of the report. The study consisted of three phases of work effort. The first phase involved an analy sis of the navigation task, an identification of the variables influencing sextant operations, and an identification of problems associated with the use of sextants currently available. Based on the analysis, human factors criteria were established and design requirements were developed. Critical design problems which could not be solved by the application of available human factors data were subjected to critical examination in the laboratory. The results of these investigations provided a basis for specific design recommendations for use in the development of an improved handheld sextant.