CFR /  Title 46  /  Part 105  /  Sec. 105.25-5 Compartments or areas containing cargo tanks or

(a) Compartments or areas containing tanks or pumping systems shall be closed off from the remainder of the vessel by gastight bulkheads. Such gastight bulkheads may be pierced for a drive shaft and pump engine control rods if such openings are fitted with stuffing boxes or other acceptable gland arrangements.