Calgary class

The Calgary class heavy troop transport was a type of starship that was prototyped in the late 23rd century. 

The prototype was developed as a response to the phasing out of dreadnoughts in favor of smaller and less costly  heavy frigates as well as Starfleet Intelligence reports of increased production of the  (D7M) battlecruiser in the Klingon Empire. It was felt that a large, fast vessel was needed for the mass transport of personnel into a battle zone.

The prototype, USS Calgary, had a displacement of 275,000 tonnes. Standard crew complement was to be 646, including 425 surface action specialists. Armaments included 22 phasers in 11 banks, plus two photon torpedo bays. Embarked attack fighters would be battlepods.

Log entries from the flight tests indicated "a nearly perfect shakedown cruise."

Production of Calgary class vessels would depend on how many space control ships would be constructed as a response to escalations of hostilities by threat forces.


 *  gave no date for the construction of the prototype, so it was assumed that construction could take place no later than ca. 2287, after transwarp propulsion proved to be impractical and vessels were refit to an  heavy cruiser standard.

Background
The class and lead ship were apparently named for the city of, capital of the province of , on Earth.