Question 1343 Deck General

The correct answer is C) both "A" and "B". The water spray or deluge system on LNG vessels serves two primary purposes: 1. Protecting surrounding areas from the radiant heat of a fire. The water spray creates a heat shield that can help prevent the spread of fire and protect nearby structures and equipment. 2. Protecting the mild steel hull plating from cracking due to LNG leaks. LNG is extremely cold, and direct exposure can cause embrittlement and cracking of the hull. The water spray helps maintain the hull's integrity in the event of an LNG leak. The other options are incorrect because the water spray system is designed to serve both of these functions, not just one or the other.