You need to be in a fleet that has built their Tier 1 shipyard and be of sufficient rank to make purchases. Not all fleets allow new members to donate or buy.

But I really recommend that you do not spend your money on the Fleet K'T'Inga. It is not as good as a Vor'cha retrofit cruiser that you can get at level 40 for free. If you want a cruiser you might want to wait until the Tor'Kaht Fleet Cruiser is available (Tier 2) which some fleets may have reached and others are soon approaching.

Here's a value review of the ships:

http://sto-forum.perfectworld.com/sh...d.php?t=324091

Peet