From PlanetsWiki
D: damage level to be inflicted at least
M: target's mass
SQRT: square root (^0.5)
Use 4.5 for non priv BLs, 5 for the advanced BLs of the privs and 6 for
the xactor mode of BLs of the privs if they have detailled knowledge of
the target's hull plan.
1.) N = D / (3000/(M+1) + {4.5|5|6} /2)
2.) sd={4.5|5|6} * SQRT(N/12)
3.) dN=3*sd/(3000/(M+1) + {4.5|5|6}/2)
4.) N'=N+dN
N' should be a suffcient large number of BLs to ensure a damage level
of D most of the time.
The greater M the greater is the precision of the former calculation.
GFM GToeroe