FTJava threshold question

["Adrian" <al.ll@xxxxxxxxxxxxx>]

I am at the moment playing the "Worst of two evils" scenario as the Sylvian 
Nomad.  During my 3rd turn I unloaded EVERYTHING I possibly could into my 
opponent's BB Yu'Vas stripping it from 76 hits to 17 hits.

The ship is within 24 mu range so I should be able to see threshold damaged 
systems.  There aren't any.  Does FTJava test once per turn for threshold 
damage or once per hull line removal since I would expect three progressive 
threshold rolls against each system to cause SOMETHING to fail.

Also it is on its last hull row which should make it a "critical" damage 
however the info screen says its only "heavy" damage.  Is this correct.

Adi