On Saturday, a Mexican Navy ship on a good will tour left a New York City pier bound for Iceland. Four minutes later, it crashed into the Brooklyn Bridge. [Spanish] “It’s falling!” [English] “No way!” Here’s what happened. The Cuauhtémoc had been docked on the Lower East Side of Manhattan for four days, open to visitors looking for a cultural experience. As the ship prepared to leave on Saturday night, a tugboat arrived to escort it out of its pier at 8:20 p.m. The ship’s bow, the front of the vessel, faced Manhattan, meaning it would need to back out of its berth into the East River. As the Cuauhtémoc pulled away from shore, the tugboat appeared to push the side of the ship, helping to pivot the bow south toward its intended route. The river was flowing northeast toward the Brooklyn Bridge and the wind was blowing in roughly the same direction, potentially pushing the ship toward a collision. Photos and videos suggest the tugboat was not tied to the ship, limiting its ability to pull the ship away from the bridge. The Cuauhtémoc began to drift north, back first, up the river. Dr. Salvatore Mercogliano, who’s an adjunct professor at the U.S. Merchant Marine Academy, told The Times that the ship appeared to be giving off a wake. This suggests its propellers may have been running in reverse, pushing it faster toward the bridge. The tugboat sped alongside the ship as it headed north, possibly trying to get in front of it and help the ship maneuver the other way. But it was unable to cut the ship off or reverse its course. All three masts crashed into the underside of the Brooklyn Bridge at approximately 8:24 p.m., four minutes after the ship had left the pier, causing the top sails to collapse. Crew members standing on the masts during the collision were thrown off entirely. Others remained hanging from their harnesses. A New York City patrol boat arrived about eight minutes after the collision, followed quickly by a fire department boat. Additional law enforcement and emergency medical services removed the wounded for treatment. According to the Mexican Navy, two of the 227 people aboard the ship were killed and 22 others were injured.