In the construction and inspection of ships, non-destructive testing has become an important means for shipyards, shipowners, and surveyors to ensure the quality of ships and the safe operation of equipment. With the rise of China's shipbuilding industry in the world shipbuilding industry, the application of ship non-destructive testing technology in the shipbuilding industry is becoming increasingly widespread, and the technical requirements are also becoming higher and higher.

The methods for non-destructive testing of ships include radiation, ultrasound, magnetic powder, and penetration.

Types included in ship non-destructive testing:

1. Non destructive testing of ship hulls and cabins

2. Non destructive testing of ship rudder and propeller

3. Non destructive testing of ship pipelines

4. Nondestructive Testing and Hull Thickness Measurement of Marine Products

Standards for non-destructive testing of ships:

CB-T 3558-2011 "Radiographic Testing Process and Quality Classification for Ship Steel Welds"

CB-T 3559-2011 "Ultrasonic Testing Process and Quality Classification for Ship Steel Welds"

CB-T 3580-1994 "Technical Requirements for Thickness Measurement in Repair of Hull Steel Plates and Components"

CB-T 3958-2004 "Magnetic Particle Testing, Penetrant Testing Process and Quality Classification for Ship Steel Welds"

GB-T 11345-2013 "Non destructive Testing of Welds - Ultrasonic Testing Techniques, Testing Levels and Evaluation"