Question 3315 Deck General

The correct answer is A) protected against freezing. The reason this is the correct answer is that the fire-main system located on an exposed deck must be protected against freezing to ensure the system remains operational in cold weather conditions. This is a requirement specified in the regulations governing the design and maintenance of fire-main systems on U.S. Coast Guard-inspected vessels. The other answer choices are not correct because: B) numbering the parts sequentially is not a specific requirement for the fire-main system, C) locking the system to prevent theft is not a regulatory requirement, and D) keeping the system pressurized at all times, while important, is not the same as protecting it from freezing.