That depends of course how easy and fast you can get a SoL. I hope it will be a lot of work and lots of hours gaming to get one or a second rate. Another Idea might be, that you only get the big ones when you are in a clan (let's call it a fleet. Clan sounds dumb). If I am right, no pirate, no single independent captain, merchantman or freeboter had a 3rd/2nd/1st rate ship. And no lone wolf would try to fuck with SoL of a fleet