Battle Bridge
The battle bridge is an auxiliary control center located on Federation starships with saucer separation capabilities.
It is primarily designed for the control of the Secondary hull. The battle bridge duplicates the strategic functions of the main bridge, with command, conn, ops, and tactical stations oriented toward a main viewscreen; however it also lacks science and engineering stations. This allowed the battle bridge to be smaller, more compact, and theoretically, more efficient.
The main bridge and the battle bridge are connected by a dedicated emergency turbolift, which can also be accessed from other decks. The battle bridge can also be entered by standard turbolift or through a connecting corridor. A small captain's ready room is located next to the battle bridge, although it is much smaller than the one off the main bridge and lacks a window.
Although a battle bridge could potentially be used to control the entire ship in the event of damage to the main bridge, the practice in Star Fleet is to coordinate recovery from main engineering.
