Why the World's Largest Cruise Ship Has No Rudder

The biggest passenger ship ever built is 365 meters long, carries up to 7,600 passengers, and has no rudder. Look under the stern of Icon of the Seas and the part every ship has relied on for centuries simply isn't there. So how does a floating city this size turn, dock and stop? This video goes below the waterline to show the hidden engineering that replaced the rudder: an idea born on Finland's frozen sea lanes in the 1980s, the electric motors that hang outside the hull, the slip rings that keep the power flowing, and the diesel-electric chain that runs from six generator engines to three giant pods. You'll see how a 365-meter ship slides sideways into a pier, why its propellers face forward, and what happens in an emergency stop. Subscribe to HullSpeed for the hidden engineering inside every ship.