| During repairs it is necessary to replace an existing vessel bulkhead. Drawings indicate the bulkhead is A60. "A" indicates which of the following? |
| A) "A" class bulkheads must not allow flame or smoke passage for 15 minutes when subjected to a fire test |
| B) "A" class bulkheads must not allow flame or smoke passage for 30 minutes when subjected to a fire test |
| C) "A" class bulkheads must not allow flame or smoke passage for 60 minutes when subjected to a fire test |
| D) "A" class bulkheads must not allow flame or smoke passage for 120 minutes when subjected to a fire test |
