The New York Waterway
NY Waterway operates ferries from New York to Tarrytown, Weehawken, Hoboken, Jersey City, Long Island Queens, and the Liberty Science Center. They also offer sightseeing cruises. They have two docks in Manhattan, one at 38th Street and one near the World Financial Center.
Call (800) 533-3779 for more information or visit their official website at www.nywaterway.com.