(a) When a vessel is involved in a violation of this chapter, the captain of the vessel shall be considered primarily responsible for the violation. A member of the crew of a vessel shall not be guilty of a violation unless it also be charged that the member of the crew acted in violation of the orders of the captain of the vessel.
(b) The owner of a vessel involved in a violation of this chapter may not be found guilty of the violation unless it is charged and proved that the owner knowingly directed, authorized, permitted, agreed to, aided, or acquiesced in the violation.