[quote=@Boop_Im_A_Dragon]
<Snipped quote by LordZell>

I think each province has a certain size requirement it needs to fill, so an island simply isn't big enough to fit ten coastal provinces. 
[/quote]

This. The island to the southeast can hold 3 Coastal Provinces, max.

EDIT: When you post your application, attach a map claim. Thank you. :D