cruisers (STO)
From Trekipedia
There were many different classes of cruisers.
Assault Cruisers
Battle Cruisers
Command Battle Crusisers
Heavy Battle Cruisers
Light Battle Cruisers
Dreadnoughts
Explorers
Multi-Mission Explorers
Heavy Cruisers
Light Cruisers
Multi-Mission Cruisers
Star Cruisers