Question 1167 Deck General

The correct answer is D) a stud at least 1" long projecting from the flange face. The U.S. Coast Guard regulations require that each vessel's vapor connection flange have a stud at least 1" long projecting from the flange face. This is to ensure a secure and reliable connection between the vessel's vapor recovery system and the shore-based vapor control system during cargo transfer operations. The stud provides a positive means of attachment and prevents the flange from slipping or becoming disconnected. The other options are incorrect because they do not meet the specific regulatory requirement for a 1" stud on the vapor connection flange. A hose saddle (A), a pressure gauge (B), or a 6" reducer (C) would not fulfill the necessary design and safety specifications for a vapor control system flange connection.