With the IVLK-15 & 16 already underway as unmanned aircraft when the aeronautical industry of Se Suomi Imperiumi was reorganized with elements from their newly acquired territories, technology and specialists The first Suomi Imperiumi Lentokonetehdas was the SILK-15 model, a single engine, high gulled wing aircraft intended for the civil market as well as for the military in the Utility, Observation but perhaps more importantly as a Liaison function. The 4th model in the series included several redesigns of various aspects especially regarding the float layout. Nonetheless it is an unforgiving aircraft for those without experience in take-offs and landings on water.