How long does it take for a third-class inland river driver to be promoted to a third-class captain?

It takes three to six months for a third-class inland river driver to be promoted to a third-class captain. The third-class inland river crew can be upgraded to the third-class inland river captain, and some training and examinations are needed on the basis of the third-class inland river crew. The whole training and examination usually takes three to six months, and the specific time will vary according to the differences of regions and training institutions. In addition, it should be noted that the upgrading of the third-class inland river crew to the third-class captain also needs to meet certain requirements such as work experience and health status, and these requirements also need to be assessed during the upgrading process.