I'm pretty curious why I was able to do the "Super Fast Battlecruiser" in Springsharp so painlessly

When I tried to make the "Super Fast Battlecruiser" work in my Warship General Design program, I struggled with it. I did not take very long to make it work in Springsharp. I must admit to be doing better with Springsharp. I have a pretty good idea about how to at least get past the stability and structural issues. Seakeeping is another thing. I really should go back and hack some more on my specification, to see if I can get at least a passable seakeeping ability.