Dalian Development Zone has a training institution for seafarers' four certificates. Dalian Maritime University is a training school to update the four certificates for seafarers. Dalian maritime school can sign up. Because there are many registered crew members and few popular places, it is necessary to register in advance to reserve places. Four certificates are the most basic certificates for working on a ship and are necessary for everyone. After passing the training of four certificates, you should know the relevant skills of ship rescue, fire fighting, first aid and raft operation. However, only four certificates can't be employed on the ship, and (the personnel of the Ministry of Affairs can, such as cooks and waiters) must also have certificates of competency for corresponding positions, such as mechanic's certificate, sailor's certificate, driver's certificate and engineer's certificate.