Scogan Seafarer Training Center of Wuhan University of Technology, get the certificate quickly. The manager's name is Wei, and training in Wuhan costs less. The four trainings of Nanjing Oil Transportation Company of Shanghai Maritime Vocational and Technical College add up to 50 days. I was trained in Shanghai. At that time, there happened to be an oil safety and oil operation class after the training, so it happened to be 50 days.