Feel free to check my figures or add your own. Ballpark figures are enough - I'm working by eyeball, by guess, and by golly.

E-class starcruiser - 2.5 gigatons
D-class starcruiser - 19.2 megatons

Mothership - 105 megatons
ARMD platform - 946 ktons
Darksaber monitor - 3.6 megatons
Saarkin-Cho and Imperetor carriers - 1 megaton

Blessed be.
-n

>Mothership - 105 megatons

Whups! That was calcing in kilometers instead of miles... (5 x 1.6) x (1.6 x .3) x (.8 x 1.6) = 491,520,000 or roughly 500 megatons

Recalcing the carrier sizes from the revised size of that big construction bay gets you about 30 megatons.

Blessed be.
-n