((a)) The Secretary may exempt a vessel from any part of this chapter if, under regulations prescribed by the Secretary (including regulations on special operating conditions), the Secretary finds that—
((1)) good cause exists for granting an exemption; and
((2)) the safety of the vessel and individuals on board will not be adversely affected.
((b)) does not apply to a vessel propelled by outboard motors when competing in a race previously arranged and announced or, if the vessel is designed and intended only for racing, when operated incidental to tuning up the vessel and its engines for the race.