Class I starship

Class I is a starship classification term used to describe a type of starship in relation to other starship types in similar fleets.

In the 23rd century, the starship was considered to be a class I heavy cruiser by the Federation Starfleet, the  was considered to be a class I destroyer, the  was considered to be a class I scout, the  was considered to be a class I dreadnought and the  was considered to be a class I transport/tug.