Drawings of your deck plans show the use of a A60 bulkheads. "A" indicates which of the following?

Correct Answer: Option B — "A" class bulkheads must not allow flame or smoke passage for 60 minutes when subjected to a fire test

SOLAS structural fire protection criteria dictate that 'A' class divisions, including bulkheads and decks, maintain structural integrity and prevent the passage of flame and smoke for 60 minutes during standard fire test exposures.