|Type||MR-5, R-5A, '10'|
|Wing Load (kg/m2)||64.4|
|Power load (kg/hp)||4.7|
|Speed at 0m||198km/h|
|Guns||1*7.62mm PV-1 synchronized
(1...2)*7.62 DA on turret
The only modifications to the aircraft itself included doubled tailfin area and manual starter on the side of fuselage nose section. Traditional way to start engine by turning a propeller is quite complicated to perform staying on the water surface...
Flying characteristics were quite good for floatplane, despite it was 389kg heavier.
Series production followed.