New Jersey Statutes Title 12. Commerce and Navigation 12 § 4-20

Every officer having charge of a steamboat navigating the Delaware river shall show, from sundown until sunrise, a light suspended by a staff or pole in the extreme forward part of the steamboat, at least ten feet above the deck, and also a light suspended in the same manner at the extreme after part of the steamboat, at least twenty feet above the deck.

For every violation of this section the officer having charge of the steamboat shall be liable to a penalty of twenty dollars to be recovered by any person who shall sue for the same.