This standard specifies the levels, knowledge, skills and work examples of ship mechanics. This standard applies to the training, assessment and use of water transport ship mechanics. Ship mechanics such as port operations, dredging, salvage, and sanitary operations should also refer to it.
JT/T 28.4-1993 history
1970JT/T 28.4-1993 Technical grade standards for workers in the transportation industry Water transport ship mechanics