The spacaeship is used in many levels and can be upgraded to have some cool weapons! Here is how its screens are laid out.
misisle count. below that is the raritanium counter (used to buy upgrades)
counter of enemies to kill in the wave.
boost power - this regains naturally over time.
radar screen with you in center, enemies in red around you.
time counter for timed missions
left and right of time - left and right shields. Shields regenerate.
Ratchet and Clank 2 Going Commando Walkthrough