This has been bugging me since me and my players have started our campaign. They have a Wayfarer, and while it is definitely bigger than the YT-1300 and its ilk, it does not feel quite up to Silhouette 5. I look at other Silhouette 5 ships and they are much, much larger than the Wayfarer. The Corellian Corvette is 150 meters, and the Marauder-class is 195 meters long. For comparison, the Space Needle is 184 meters tall. That's gigantic. These are absolutely small capitol ships. At 85 meters, the Wayfarer shouldn't even be in the same class as them. If you look at the deck plan of the Wayfarer on wookieepedia, is really isn't that much larger than a lot of the other transports.
I've really had a hard time rationalizing this in my head. This kind of thing always bugs the crap out of me. Should the Wayfarer be Silhouette 4? Am I missing something?