Time to borrow Mr. March's method of responding to many people.
Graham
You sure the school girl isn't a joke character? You know, a character with a high pitched voice that explains everything which normally isn't covered.
And Macross 25's city ship is called Island 1 (and all the connecting pods are called Island 2, Island 3, Island 4, Island 5, etc. etc. etc.). As a whole, you call the fleet Macross 25 or Macross Frontier. ex: "I'm at the Macross Galaxy fleet and I need to get to Macross Frontier fleet." Within the fleet, you use the "Island" designation. ex: "I'm at Island 1 and I need to take the train to Island 25."
I'll update you when I translate it. Because 15km and 6km are both used with "overall length". So let me (or someone else) try to translate it before you start saying anything.
pensives_wetness
It's more likely a district. Different districts represent different cities. The "San Francisco" area obviously looks like San Francisco. The "Shibuya" area looks just like ... Shibuya.
Zinjo
IIRC, Kawamori's last anime convention in the States was at AX in Long Beach, CA.
And let me try to translate the measurements it first before you start saying this length or that length.