 They were also prime targets for the enemy fleet, and had typically short life expectancies in heavy combat.Other examples of specialty warfare ships were drone bombardment ships, carrier escorts (which had extra defensive weaponry and fighter servicing equipment), tugs (which used interchangeable pods with mission-specific equipment, especially the ever-popular "battle pods" and "carrier pods"), exploration or "survey" ships, and repair and resupply ships.Another category of specialty ship was the "fast" starship with a new type of "hot" warp drive that gave extra power and speed, but at the expense of less hull volume for mission equipment.