46 C.F.R. § 50.20-33 Correspondence regarding approved plans.
Title 46 - Shipping
(a) The Coast Guard maintains records concerning plans, calculations, etc., of equipment approved in accordance with the regulations in this subchapter for 5 years. After 5 years from the date of original approval of a drawing, plan or calculation and related correspondence, any submittal or correspondence which refers to such documents shall be accompanied by copies of the documents, including pertinent correspondence.
Title 46: Shipping
PART 50—GENERAL PROVISIONS
Subpart 50.20—Plan Submittal and Approval
§ 50.20-33 Correspondence regarding approved plans.
