Wonder... if she dive when she shoot.
Lenght 10m, beam 3m, draught 0,5m, if that is any indication for stability
. It's clear that this is a wartime improvisation and most likely would have never happened in peacetime. That said, information about that is very scarce without any mention of stability issues...
In the meantime: Racing yacht Meteor
of 1909, fourth ship in a series of five racing yachts of the same name.
Any help and source material is always welcome.