Frigate
In starship classification, a frigate was a fast, medium-sized starship intended to protect other vessels. 

In the 2260s of the alternate reality, information on Starfleet operated frigates was located in the Federation database. ()

During the 23rd and 24th centuries, Starfleet employed vessels designated as frigates. (, )

Types of frigates 
 Cardassian frigate
 Federation frigates:
  (medical frigate)
 
 
 
 
 
 Kazon frigate
 Kinjal frigate

External links 
 
 

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ja:フリゲート
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Spacecraft classifications
Spacecraft classifications (alternate reality)