[President_Elect_Shang]

The scale is taken from canon x10. So taking the Qs for example it is 1HS converted to the mod is 10HS (1*10). As for the cargo problem you are having I think I know what it may be. You are getting the cargo storage requirement mixed up with the cargo hold restriction. So lets take a freighter for example (because all freighters have both). If you read the two relevant freighter requirements they are:

1: This vehicle must have at least 40% of its hull dedicated to cargo storage.
2: All vehicles must have at least 1 cargo hold for itself.

Those are two separate elements. In #1 you need anything that has cargo storage or that counts toward cargo storage. In the second you must have a Cargo Hold or Small Cargo Hold.