; and (ii) will serve on active duty for at least 4 years immediately after such appointment. (e) Regulations The Secretary shall prescribe regulations to carry out this section. Such regulations shall include— (1) standards for determining what constitutes a breach of an agreement signed under such subsection (d)(1); and (2) procedures for determining whether such a breach has occurred. (f) Repayment An officer candidate or former officer candidate who does not fulfill the terms of the obligation to serve as specified under subsection (d) shall be subject to the repayment provisions of section 216(b). . (b) Clerical amendment The table of sections in section 1 of the Act entitled An Act to authorize the Hydrographic Services Improvement Act of 1998, and for other purposes ( Public Law 107–372 ) is amended by inserting after the item relating to section 233 the following: Sec. 234. Officer candidates. . (c) Officer candidate defined Section 212(b) ( 33 U.S.C. 3002(b) ) is amended— (1) by redesignating paragraphs (4) through (6) as paragraphs (5) through (7), respectively