Like standard Escorts, Corvette’s are designed to engage pirate raiders who attack convoys. Corvettes are significantly smaller than Escorts, and do not have the extensive sensor systems found on other Escort class vessels. Most operate in large groups, allowing one or more ships to pursue raiders, while others escort-corvettes continue on with a convoy. Corvettes are often found operating with larger vessels, which act as unit command ships for Corvette squadrons. Corvettes are easier to build and maintain than most other vessels. Most Corvettes have very limited range, built to escort standard convoy routes. Most Corvettes replace science systems with emergency transporters and holding cells. Most Corvettes engage Orion and other pirate forces, found through-out the Federation. Corvettes never operate alone and are rarely used in large scale combat situations.