Question 745Steam Plants - Assistant Engineer

The correct answer is D) Auxiliary steam. The illustration SG-0005 depicts a piping system that is most likely an auxiliary steam system, which is used to distribute steam for various auxiliary functions on board a vessel, such as heating, ventilation, and steam-driven equipment. This type of piping system is commonly found on larger commercial vessels, including those that may require a U.S. Coast Guard Captain's License. The other options are not as likely to be depicted in this particular illustration. Auxiliary exhaust, Butterworth, and main feed systems serve different functions and have distinct piping configurations that would not match the illustration.