ANT-44 (TsAGI-44, MTB-2) heavy torpedo bomber
It was an amphibian with a retractable wheeled undercarriage, and the floats, mounted near the wingtips on struts, were load-carrying. Powerplants were four Gnome- Rhone 14Krsds, which gave 810hp each, and were conventionally mounted in the wing leading edges. The wings' shape resulted in the ANT-44, as the project was designated, being called the Chaika (Seagull).
Info: Virtual Aircraft Museum