Thanks to ALL who have expressed interest in the activities of Vadim Shavrov, designer and historian of aviation, (Special thanks to Silencer1!)
Shavrov "IM" 'Istrebitel Morskoy' = Marine Fighter - you can see here :
http://www.secretprojects.co.uk/forum/index.php/topic,6473.0/
In the continuation of the theme a few images Shavrov Sh-3 (USR)
'Upravlenie Spetsial'nyh Rabot "= Office of Special Works.
That is, it was supposed to be the first Soviet aircraft "limousine" for officials working in the regions ...
Stage of readiness of 90%, but after the elimination of USR (the customer) all works were stopped.
Shavrov Sh-7 (known enough aircraft, but this scheme is the presence of interesting military version)
Shavrov "Stal-4" / steel / two different options. (Previously April 30, 1930 RL Bartini offered his version of "Stal-4 and with the support of the Minister P. Baranov, together with the
M.N. Tukhachevsky, work began on the factory number №240 SNII, the fate of this project is not known; unlike from Stal-6, -7, -8.)
Sources: G. Petrov, "Seaplanes and WIG Russia "
"Авиация и Космонавтика" mag.