John Crewe · Vehicle Pipeline Director, Foundry 42 UK

So within those size categories, the grades then plus or minus those values; they never cross over. But an A-grade military quantum drive is going to have a higher top speed and acceleration than a D-grade civilian one, for example. But then the cost and the maintenance outweigh that.

Jared Huckaby · Host, Community

And I'm sorry, just to clarify for anybody who might not know, there's a size, there's a type, and there's a grade to our components. There's the size, one. There's the type, civilian, and then there's the grade, D, in John's example. And you can read more about that in the Shipyard series of articles, which we published last year, available on robertspaceindustries.com. So three different stats for each ship component that will ultimately affect how it performs: size, type, and grade.