Every vessel subject to the provisions of this chapter, other than a public vessel being used for noncommercial purposes, which is operated in violation of this chapter or of any regulation promulgated pursuant to section
1607 of this title, shall be liable to a civil penalty of not more than $5,000 for each such violation, for which penalty the vessel may be seized and proceeded against in the district court of the United States of any district within which such vessel may be found.