Comprehensive system of sailors

https://www.pmo.ir/fa/seafarers/testandcertificates-%D8%A2%D8%B2%D9%85%D9%88%D9%86-%D9%88-%D8%A7%D8%B3%D9%86%D8%A7%D8%AF-%D8%AF%D8%B1%DB%8C%D8%A7%D9%86%D9%88%D8%B1%D8%AF%DB%8C