Heavy Fighter

Details:

 * Heavy Fighters are used in the first stages of the game.
 * They are slightly better than Light Fighters.
 * Sometimes they are used as a shield to more powerful units, however, since their attack, defence, shield is still very low, Cruisers are used for this purpose more often.

Building Requirements: Shipyard Level 3.

Tech Requirements: Strength Tech Level 2. Impulse Drive Level 2.
 * Gas is not required to build the Heavy Fighter.