This study aimed to empirically identify the determinants of turnover intention of seafarers under the recognition that the number of seamen is decreasing. The results of regression analyses on questionnaire survey data are as follows. The more satisfied over wage and working condition, the lower the level of turnover intention of seafarers. The higher social identification and career vision, the lower the level of turnover intention of seafarers. In addition to this, older, married seamen were found to have lower turnover intention as compared to younger, unmarried ones. Lastly, four-year college graduates were, on the other hand, found to have higher turnover intention.