How much does it cost to take the seafarers' four certificates now? . . How long does it take to contact the telephone address? Is there an age limit?
Four certificates cost about 2000, about two months. Tianjin, Shanghai and Shandong can be tested in many places. Tianjin Shipping, Qingdao Shipyard and Shanghai Ocean Education Center all have professional training courses. There seems to be no age limit. At least, I don't know the specific phone number of an adult. I hope I can help you.