46 C.F.R. § 69.67 Marking of cargo spaces.
Title 46 - Shipping
Cargo spaces used in determining volume (Vc) for calculating net tonnage must be permanently marked with the letters “CC” (cargo compartment) which are at least four inches in height and positioned so as to be visible at all times.
Title 46: Shipping
PART 69—MEASUREMENT OF VESSELS
Subpart B—Convention Measurement System
§ 69.67 Marking of cargo spaces.
