Naval base

I have bought my helicopter group but unable to place at a naval base,in effect I don't seem to have one on a list.It say click on map to postion fleet but nothing works,i would appreciate some help please.

You must buy first a naval base and then you can position your fleets there. You go to Trade>products in stock: buy and sell and "buy" a "Navy Base". In a game month it will be delivered (it's usually in oversupply) and then you're set.

ohh okay, their it is Trade on the top near the Ticker tape.
geeze I had a hard time getting this too work from other Button Holes.