Section 7107 specifies that there is no time limit on the validity of a certificate of registry issued to a medical doctor or a professional nurse but is conditioned on the continuous possession of the appropriate license issued by a State.

1990—Pub. L. 101–380 substituted “is valid for 5 years and may be renewed for additional 5-year periods” for “is not limited in duration”.

Amendment by Pub. L. 101–380 applicable to incidents occurring after Aug. 18, 1990, see section 1020 of Pub. L. 101–380, set out as an Effective Date note under section 2701 of Title 33, Navigation and Navigable Waters.

For provisions that a certificate of registry issued before Aug. 18, 1990, terminates on the day it would have expired if the amendment to this section by Pub. L. 101–380 were in effect on date it was issued and was renewed at the end of each 5-year period under this section, see section 4102(d) of Pub. L. 101–380, set out as a note under section 7106 of this title.