(a) These procedures apply to the removal of wrecks or other obstructions within the navigable waters of the United States, as defined in part 329 of this chapter.

(b) This part does not apply to the summary removal or destruction of a vessel by the Coast Guard under authority of the Clean Water Act (33 U.S.C. 1321), or to any removal actions involving obstructive bridges which are subject to separate regulation under part 114 of this title.

(c) For vessels which were sunk or wrecked prior to November 17, 1986, the statutory obligation to remove belongs solely to the owner (not the operator or lessee), and the owner's obligation to reimburse the U.S. Treasury for federal removal is limited to cases of voluntary or careless sinking.