>>63548568Mulberry harbours had floating roadways, that means for protection from waves they needed to circle entire area with breakwaters. That made system huge, expensive, and slow to install (10 days). Still Mulberry harbours were crucial for Allies landing success.
Chinese barges like jackup rigs use retractable legs to rise entire system above water. So it doesn't need protection from waves, roadways are above water not floating. System can be installed in hours not days.
That is gigantic improvement in the naval landing logistics capabilities.
It's not super novel idea, jackup rigs and barges are stapple to offshore engineering todays, but China was first who adopted this tech for naval landing.