If any owner, agent, master, officer, or person in charge, or any member of the crew of any such vessel fails to comply with any regulation or rule issued or order given under the provisions of this subchapter, or obstructs or interferes with the exercise of any power conferred by this subchapter, the vessel, together with her tackle, apparel, furniture, and equipment, shall be subject to seizure and forfeiture to the United States in the same manner as merchandise is forfeited for violation of the customs revenue laws; and the person guilty of such failure, obstruction, or interference shall be punished by imprisonment for not more than ten years and may, in the discretion of the court, be fined not more than $10,000.

If any other person knowingly fails to comply with any regulation or rule issued or order given under the provisions of this subchapter, or knowingly obstructs or interferes with the exercise of any power conferred by this subchapter, he shall be punished by imprisonment for not more than ten years and may, at the discretion of the court, be fined not more than $10,000.

A person violating this subchapter, or a regulation prescribed under this subchapter, shall be liable to the United States Government for a civil penalty of not more than $25,000 for each violation. Each day of a continuing violation shall constitute a separate violation.

Any vessel that is used in violation of this subchapter, or of any regulation issued under this subchapter, shall be liable in rem for any civil penalty assessed pursuant to subsection (c) and may be proceeded against in the United States district court for any district in which such vessel may be found.