The Best How Fast Do Modern Cruise Ships Travel References. Well, the average speed of a cruise ship in the sea is between 20 knots which equals. Web generally speaking, most modern cruise ships can travel between 18 and 22 knots per hour, which translates to roughly 20 to 25 miles per hour.
The cruise line has five ships: This means that when traveling under full power, a cruise liner will travel approximately 1 knot. Web generally speaking, most modern cruise ships can travel between 18 and 22 knots per hour, which translates to roughly 20 to 25 miles per hour.
