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- Master & Mate (Oceans or Near Coastal (Limited Tonnage: Less Than 200 GRT)) »
- Q158 - Navigation and Deck General/Safety
265. Ultrasonic testing is used to determine the thickness of a vessel's shell plating and which other testing?
Ultrasonic testing is used to measure steel thickness and detect subsurface defects in welds. This method utilizes sound waves to identify internal flaws without damaging the structure, making option C the correct answer.
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