Refers to-basic training on cargo operation of oil chemical tankers and advanced training on cargo operation of oil tankers, and one * * * is two certificates. Cabin and Class A chefs, waiters and interns do not need a second certificate. Other personnel involved in duty and cargo oil operation need a second certificate. The training program code is T0 1, T02, and the make-up training program code is T0 1 1, T0 12. Chemistry is T03 and makeup is T0 13.