The purpose of this study was to examine the effects of participation motive in marine sports participation on sports immersion and school life satisfaction of Korea Naval Academy Cadets. Using the sampling method of convenience sampling, total of 230 questionnaire was distributed in Korea Naval Academy. Among them, 20 insincere questionnaire were ruled out and 210 remaining were used to analyze. Researched material was analyzed using SPSS 23.0 program to draw frequency analysis, factor analysis, reliability analysis, exploratory factor analysis, correlation analysis and multiple regression analysis. The analysis results were as following. First, participation motive had a partially influence on sports immersion. Second, participation motive had a partially influence on school life satisfaction. Third, sports immersion had a partially influence on school life satisfaction.