Growth of the Land-wasser-schlepper (Land-Water-Tractor) were only available in 1936, however the first 7 automobiles were finished in July of 1940. One more 14 had been created by March of 1941. It absolutely was designed by Rheinmetall-Borsig as an amphibious car for use by engineers but it lacked storage and loading/unloading access. To conquer this dilemma, unique 10 and 20 ton amphibious trailers were made. It carried three to five men team and 20 people. Another problem had been it was unarmored and could perhaps not operate efficiently inside combat area. LWS saw solution in Russia and North Africa .