Electronic Countermeasures
Electronic warfare devices can fool enemy ship sensors and act as flare to protect from incoming torpedoes and missiles
Planet Scanners
Planet scanners analyze locations on planets and provide partial information about them.
Radars
Radars can sense other spaceships in the system.
Ship Scanners
Ship scanners can provide limited information about other spaceships and shipwrecks.
Stealth Generators
Stealth generators reduce the energy signature of the ship at a distance.