Ships

[Super Buu]

Could there be ships that are between the sizes of Fighters and Small ships? Barely bigger than a fighter, but big enough to walk around in. Say, around the size of the Millennium Falcon. I ask because my favourite science-fiction ship is something like 9.2 metres in length, but nearly the same size around, and easy to walk around in. Here's a picture of the ship, for reference. However, I assume fighters, whilst 9.5 metres in length, are supposed to have the pilot 'strapped in', and not able to walk around.