|Wing Load (kg/m2)||52.0|
|Power load (kg/hp)||6.5|
|Speed at 0m||185km/h|
Project of new flying boat 'took off' in 1924 at Moscow apartment of D.P.Grigorovich. P.D.Samsonov and K.A.Vigand participated in the project. Assembly was performed at 'Krasnyj Letchik' (The Red Pilot) factory, and in Summer 1925 MRL-1 was ready.
Single-strut pusher biplane had very elegant and clean appearance, but the hull construction was very expensive (overuse of expensive redwood) and seriously overweight. Gunner position was located right behind the propeller.
Despite speed requirements were fulfilled, ceiling and climb were unacceptably poor. Unsuccessful hull shape resulted in 'wave pushing' and delayed takeoff. MRL-1 story followed D.P.Grigorovich 'tradition' to came up with good design after several failures (like with M-5 and M-9).
MRL-1 was not accepted for production, the only built aircraft served for a long time with the White Sea Navy.