46 C.F.R. § 105.20-1 Plans and/or sketches.
Title 46 - Shipping
(a) The owners, master, or agent of a commercial fishing vessel shall submit with his application for the initial inspection a brief description and the plans and/or sketches of the cargo tanks and piping systems for filling and dispensing cargo; dimensions and identifications of material shall be included. (b) If cargo tanks will be located in enclosed compartments or below decks, the plans and/or sketches shall also show the proposed ventilation system. (c) Plans and/or sketches are not required if the cargo tanks and piping systems have previously been accepted by the Coast Guard.
Title 46: Shipping
PART 105—COMMERCIAL FISHING VESSELS DISPENSING PETROLEUM PRODUCTS
Subpart 105.20—Specific Requirements—Cargo Tanks
§ 105.20-1 Plans and/or sketches.