46 C.F.R. § 105.25-5 Compartments or areas containing cargo tanks or pumping systems.
Title 46 - Shipping
(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.
Title 46: Shipping
PART 105—COMMERCIAL FISHING VESSELS DISPENSING PETROLEUM PRODUCTS
Subpart 105.25—Additional Requirements—When Cargo Tanks Are Installed Below Decks
§ 105.25-5 Compartments or areas containing cargo tanks or pumping systems.

