Indiana Code Title 14. Natural and Cultural Resources § 14-15-6-2.5

Sec. 2.5. (a) Each boat that carries passengers upon public water for hire must have:

of the exterior portion of the boat that is below the waterline at least one (1) time every sixty (60) months.  However, an underwater survey may only be used to satisfy the requirements of this chapter one (1) time every one hundred twenty (120) months.

(b) If the owner of the boat elects to have an underwater survey, the owner must hire and pay for the underwater survey, which must be conducted by an inspector from a certified organization that is approved under subsection (c).

(c) The commission shall maintain a list of certified organizations that are approved to conduct underwater surveys under this chapter.