A person who knowingly places, or causes to be placed, in navigable waters of the United States, by any means, a device or dangerous substance which is likely to destroy or cause damage to a vessel or its cargo, cause interference with the safe navigation of vessels, or interference with maritime commerce (such as by damaging or destroying marine terminals, facilities, or any other marine structure or entity used in maritime commerce) with the intent of causing such destruction or damage, interference with the safe navigation of vessels, or interference with maritime commerce shall be fined under this title or imprisoned for any term of years, or for life; or both.