When the Secretary finds that the laws and regulations of a foreign country related to measurement of vessels are similar to those of this chapter and the regulations prescribed under this chapter, or when a foreign country is a party to the Convention, the Secretary shall accept the measurement and certificate of a vessel of that foreign country as complying with this chapter and the regulations prescribed under this chapter.

Subsection (a) of this section does not apply to a vessel of a foreign country that does not recognize measurements under this chapter. The Secretary may apply measurement standards the Secretary considers appropriate to the vessel, subject to applicable international agreements to which the United States Government is a party.