A missile is a special type of one-shot ship that is loaded onto a carrier's rack and then fired at a target. Missiles are destroyed when they are fired in this manner.  Missiles have no engines, scan, or racks ratings, and all missiles have one DP.  Only the guns component is configurable.  Unlike other hull types, a missile's tonnage is a configurable parameter, which allows you to determine how big a missile class is (and therefore how many racks an instance of that missile class will require).
 
New missile classes are exempt from the one-time design fee.
 
Basic configuration:
Guns: 8
Tonnage: 1
Cost: 1
 
Additional component cost: exp(guns/(13 + (5 * tonnage)))