Question 1666 Deck General

The correct answer is D) Seamless steel pipe or tubing. Aboard small passenger vessels, seamless steel pipe or tubing may be used for diesel fuel line installations, but it is not permitted for use in gasoline fuel lines. This is because steel is more rigid and less prone to leaks compared to other materials, making it suitable for diesel fuel systems. However, steel is not recommended for gasoline fuel lines due to the risk of sparks and increased fire hazard. The other options, A) nickel-copper tubing, B) copper-nickel tubing, and C) annealed copper tubing, are not suitable for diesel fuel lines because they are more flexible and prone to kinking or damage, which could lead to fuel leaks. These materials are typically used for gasoline fuel lines instead.