The Navy’s first Littoral Combat Ship, the USS Freedom (LCS-1), has had to return to its temporary homeport in Singapore after encountering an electrical plant failure that caused a brief loss of propulsion. The USS Freedom. Photo by Lockheed Martin. The ship lost propulsion on Saturday after a diesel generator overheated and shut down because of an exhaust leak in a turbocharger, a Navy spokesman said. The crew was able to restore propulsion and returned to the Changi Naval Base…