((a)) ** .—** A vessel is a wrecked vessel under this chapter if it—

((1)) was wrecked on a coast of the United States or adjacent waters; and

((2)) has undergone repairs in a shipyard in the United States equal to at least 3 times the appraised salvage value of the vessel.

((b)) ** .—** The Secretary may appoint a board of three appraisers to determine whether a vessel satisfies subsection (a)(2). The costs of the appraisal shall be paid by the owner of the vessel.