A portage railway is a short and possibly isolated section of railway used to bypass a section of unnavigable river or between two water bodies which are not directly connected. Cargo from waterborne vessels is unloaded, loaded onto conventional railroad rolling stock, carried to the other end of the railway, where it is unloaded and loaded onto a second waterborne vessel. A portage railway is the opposite of a train ferry. write this in different words

A portage railway is a short railway that is utilized to bypass a section of river or connect two separate bodies of water that cannot be directly traveled through. It allows for the transfer of cargo from ships to regular trains, which then transport the goods to the other end of the railway. At this point, the cargo is unloaded again and transferred onto a different waterborne vessel. In essence, a portage railway acts as a link between two water bodies, enabling the transportation of goods across regions that are otherwise inaccessible by water. Unlike a train ferry, which carries trains directly over a waterway, a portage railway requires the shifting of cargo from waterborne vessels onto trains for transportation.