N.Y.C. Admin. Code § 10-122: § 10-122 Motor boats; operation adjacent to bathing beaches.

It shall be unlawful for any person to operate a motor boat within three hundred feet of any public beach used by bathers. Any person who shall violate or refuse to comply with the provisions of this section shall, upon conviction thereof, be punished by a fine of not more than one hundred dollars or by imprisonment not exceeding three months or by both such fine and imprisonment.