The Moskalyev SAM-11 was an amphibious version of the SAM-5bis-2, with a flying boat hull, retractable landing gear and raised engine and tail to avoid spray.
[1] The original SAM-11 was powered by a tractor configuration, 220 kW (300 hp) inverted, air-cooled, six cylinder inline Bessonov MM-1 engine in a nacelle above the wing on a central pylon.
The triangular plan tailplane was mounted at about one third fin height and carried rounded, tabbed elevators, separated for rudder movement.
There, the legs were fixed to the fuselage underside but the planing bottom of the SAM-11 meant that they had to be attached to the plywood-covered sides, reinforced in that area.
[1] It was officially tested at Sevastopol and flew satisfactorily but did not reach production as its payload with the lower power MV-6 was judged too small.