Starship combat in Rogue Trader works like this:
During each Strategic Round, each ship receives one Strategic Turn. Like regular combat, each ship can perform Actions during this turn. The Actions a ship performs fall into two categories: Manoeuvre Actions and Shooting Actions. Each ship must make one Manoeuvre Action and may make one Shooting Action during their turn.
Under normal circumstances, players must perform the ship's Manoeuvre Action before its Shooting Action, and may perform Extended Actions anywhere in this order that they wish
The "Weapons and shooting" section of the rulebook refering to starship combat states:
After completing its Manoeuvre Action, a ship has the option of firing its weapons.
So, can you fire before maneuvering? If so, when or how can you do this?