Code of Federal Regulations Title 46. Shipping 46 CFR Pt. 337 § 4 Sec. 4. Evidence required

(a) An affidavit of the Master which shall set out fully the nature of the casualty and/or stress of weather encountered;  when and where the casualty and/or stress of weather occurred;  nature of the damage sustained;  the port where the repairs were made or the equipment purchased and a statement of the Master as to whether the repairs or equipment purchased were required to secure the safety or seaworthiness of the vessel to enable her to reach a port of destination in the United States;

(b) Itemized invoices covering the cost of repairs made or equipment purchased;

(c) Abstracts of the vessel's log;

(d) Classification surveyor's report confirming vessel's classification when the repairs were made in order to insure seaworthiness.