Sopwith HT (Hydro Tractor) 13/09/202522/09/2025Terry The 1913 Sopwith HT (Hydro Tractor) biplane was designed and built by Sopwith Aviation Co. Span: 56’4″Twin-Floats: 15′ long Share this: Click to share on X (Opens in new window) X Click to share on Facebook (Opens in new window) Facebook Like Loading... Related