The fighters base is now used instead of the centre point for determining range. But how about for determining arc?
ie: can the Vorchan shoot the fighter below:
a) Yes, Vorchan can shoot it because part of the base is in F arc
b) No, Vorchan can't shoot because the fighter's centre point is not in F arc
c) No, Vorchan can't shoot because the closest point of the fighter's base is not in F arc
As an extension of this, what if it were a Nova?
1) The Nova could choose which arc to fire, F or P, similar to if a target ship is exactly on the line between arcs
2) The Nova can only use the P arc because the fighter's centre or closest point are in that arc
3) The Nova can fire both F and P weapons because part of the fighter's base is in both arcs
ie: can the Vorchan shoot the fighter below:

a) Yes, Vorchan can shoot it because part of the base is in F arc
b) No, Vorchan can't shoot because the fighter's centre point is not in F arc
c) No, Vorchan can't shoot because the closest point of the fighter's base is not in F arc
As an extension of this, what if it were a Nova?
1) The Nova could choose which arc to fire, F or P, similar to if a target ship is exactly on the line between arcs
2) The Nova can only use the P arc because the fighter's centre or closest point are in that arc
3) The Nova can fire both F and P weapons because part of the fighter's base is in both arcs