Hi FFG-hivemind!
Me and a friend had a lively game of 300 points the other night and as many of you, we also ran into a discussion about firing arcs and line of sight. I will here present the two arguments and eagerly await your response.
The intention was to fire the front battery of my nebulon B into the side arc of his Victory star destroyer.
Case one: Legal
https://drive.google.com/file/d/0B2OG_HtBWo55VnZvcHA0emFsazg/view?usp=sharing
The VSD's base is within my Nebulon frigates front firing arc, and I can trace a line of sight line from my dot to his without crossing any lines on either base.
Case two: Illegal
https://drive.google.com/file/d/0B2OG_HtBWo55RE5qaEFvaW1QYWM/view?usp=sharing
The VSD's base is in my firing arc, but I cannot trace the line of sight line to his dot without crossing the imaginary line extending from my nebulons base card. Apart from this, the VSD's side dot is not within my firing arc.