Battle frigate

A battle frigate was a starship classification applied to a battle-outfitted variant of a frigate starship. 

Types of battle frigates

 * Federation, Starfleet
 * (FFB variant)
 * Klingon Empire, Klingon Defense Force
 * Romulan Star Empire, Romulan Imperial Fleet
 * (SNB variant)
 * (SNB variant)