1918 Russian 15m Motor Launches

[PT Dockyard]

I read in Norman Friedman's Book "U.S. Small Combattants, a Design History," that Russia had a series of 15.3M subchaser/motor launches built overseas ( US or Britain) during World War One. It is possible six of these ended up on Lake Onega in 1919 fighting with the White Flotilla.

They were designated :
MI 1-4 ( built in England)
MI 5-8
MI 15-18
PI 1-3

These sound like they are different than the Russian built SKA craft and the US built Greenport SK launches. They later served in the Soviet Navy. Does anyone have any photos of these craft?

Dave G.
The PT Dockyard