NEW YORK — A high-speed ferry loaded with hundreds of commuters from New Jersey crashed into a dock in Lower Manhattan during Wednesday’s morning rush hour, seriously injuring 11 people, including one who suffered a severe head wound falling down a stairwell.

Scores of people who had been standing, waiting to disembark, were hurled to the deck or launched into walls by the impact, which came after the catamaran Seastreak Wall Street slowed following a routine trip across New York Bay and past the Statue of Liberty, passengers said.