I can't vouch for my spelling of Ark/Arc, as I no longer have the sleevenotes and can't check.  I can guarantee that the rest is right, though; a "chat", if I remember correctly, is a general-purpose word like "what's it's name" or "thingummybob".  I think that "tilt" is a canvas cover or awning, but this is at a distance of some years.  Yes, "scran" is food.

Malcolm