What i the kilogon equivelent of the diffrent federation ships?
There really is no direct way to relate the two.
The only thing I can think of is that Bird-of-Preys are like Escorts, but other than that, they aren't related like Blakmage said.
I am flying the cruser is the havy warship the closest resembalence?
I've been playing on the KDF side for some time and here is a link to the STO forums that will explain the differences between the Fed ships and the KDF ship.
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<a class="postlink" href="http://forums.startrekonline.com/showthread.php?t=239183">http://forums.startrekonline.com/showth ... p?t=239183</a><!-- m -
to sum it up:
Their purpose is to destroy Federation Ships. Qa'Pla!!