Who built waterplane?

The term "waterplane" can refer to various designs, including those for water-based aircraft or hydrofoils. The first successful waterplane, often recognized as the seaplane or floatplane, was developed by inventors such as Henri Fabre in France, who flew the first seaplane in 1910. Additionally, figures like Glenn Curtiss and Howard Hughes contributed significantly to the development of water-based aircraft in the early 20th century. If you meant a specific model or type, please clarify for more detailed information.