Ramming Damage

I was just dusting off the rules:

SPACs do 1d12
TPACs do 3d12
MPACs do 5d12

Is it right to think that Corvettes do 7d12, Frigates do 9d12 and Destroyers 11d12?

Note limited by the number of hit boxes a ship has got when ramming another.

Found it.

8d12 for a Corvette
10d12 for a Frigate
12d12 for a Destroyer