27 C.F.R. § 44.230
When the claimant is unable to procure a certificate of landing, in accordance with the provisions of § 44.228 , in consequence of loss of the tobacco products, and cigarette papers and tubes, his application for relief shall set forth the extent of the loss and, if possible, the location and manner of shipwreck or other casualty and the time of its occurrence. When obtainable, affidavits of the vessel's owners should be furnished detailing the manner and extent of the loss and the time and location of the disaster. If the tobacco products, and cigarette papers and tubes were insured, the claimant shall furnish certificates by officers of the insurance companies that the insurance has been paid, and that, to the best of their knowledge and belief, the tobacco products, and cigarette papers and tubes were actually destroyed. The aforesaid proof shall be furnished to the appropriate TTB officer within 6 months from the date of clearance of the tobacco products, and cigarette papers and tubes from the United States.
27 C.F.R. § 44.230
72 Stat. 1419; 26 U.S.C. 5706