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