Graduated from marine engineering, how about a tugboat in the port? What is the salary prospect? thank you

The 4000 dry tugboat in Tianjin Port, working for one day a month and resting for two days, really does not develop. I have a friend who has worked for less than two years and resigned. The renewal is a class C certificate. As for the shipyard, I have a friend in Rong Sheng Heavy Industry, which is a private company. The monthly graduation fee is 3500 yuan. For example, Waigaoqiao, Shanghai Shipbuilding Industry, Jiangnan Shipbuilding, Xiamen Shipbuilding Industry and Mawei Shipbuilding signed by my friend are all 2,500 yuan a month. Of course, the development of marine engines in shipyards can only be said that Yantai Salvage Bureau generally has more than 3,000 jobs, mainly near the port. There are not many projects now, and I have several students signing up. Civil servants are not easy to take the exam now, and there are more jobs that need work experience in the future. It's getting harder and harder for fresh graduates to take the civil service exam. For boarding a ship, it is basically a matter of running for four or five years. Of course, the employment direction of these engineers is the best, the most secure and the most secure. Other job-hopping is common. As long as you study technology in shipyards, especially in excellent shipyards such as Waigaoqiao, it is difficult for a maritime undergraduate to develop in these shipyards. After several years of hard work, it is good to learn from practice and then jump ship. The shipyard in Nantong offers a basic salary of 30,000 yuan per month to recruit marine engineers, and the requirement is to work in a large shipyard for more than five years.