33 U.S. Code § 2609 - Penalties
Except as provided in subsection (b) of this section, a person violating this chapter is liable to the United States Government for a civil penalty of not more than $25,000. Each day of a continuing violation is a separate violation. A vessel involved in the violation also is liable in rem for the penalty.
Any person that knowingly violates, or that knowingly aids, abets, authorizes, or instigates a violation of this chapter, shall be fined under title 18, imprisoned for not more than 3 years, or both.