Tactical Systems
PHASERS
Phaser array arrangement: Primary hull: Three dorsal phaser arrays on the primary hull, one primary dorsal array extending 340 degrees and two point defense arrays to either side of the Shuttlebay. The arrays cover the entire semi-sphere above the ship, except for a few blind spots close to the hull and Shuttlebay. One ventral phaser array located on the primary hull extends approximately 320 degrees and covers the forward and lateral portions of the semi-sphere below the ship, except for those blind spots close to the hull. Total of 4 phaser arrays on primary hull.
Secondary hull: One phaser array on each nacelle pylon provides coverage on either side of the ship. A single point defense array near the aft torpedo launcher provides defense to the aft of the ship. A phaser array on the ventral side of the ship provides coverage to areas below the ship. Total of 4 phaser arrays on secondary hull.
When the weapons pod is installed, there are three phaser arrays located on the module itself to provide additional protection.
Phaser Array Type: The Nebula-class vessel utilizes the Type X phaser array system. The eight arrays are all type X, the new standard emitter. Each array fires a steady beam of phaser energy, and the forced-focus emitters discharge the phasers at speeds approaching .986c (which works out to about 182,520 miles per second - nearly warp one). Current Tactical policy has phaser arrays automatically rotate phaser frequency and attempt to lock onto the frequency and phase of a threat vehicle's shields for shield penetration.
Phaser Array Output: Groups of emitters are supplied by redundant sets of energy feeds from the primary trunks of the electro plasma system (EPS). Individually, each type X-emitter can only discharge approximately 5.1 MW (megawatts). However, several emitters can direct their fire onto one target area to increase damage throughput.
Phaser Array Range: Maximum effective range is 300,000 kilometers.
Primary purpose: Assault
Secondary purpose: Defense/anti-spacecraft/anti-fighter
TORPEDO LAUNCHERS
Arrangement: Two torpedo launchers, one located just above the main deflector dish and another at the rear of the ship above the impulse engine, provide the Nebula-class with additional defense and offense capabilities. These launchers are identical to the launchers found in such capital ships as the Galaxy-class, and hence have the capability of firing up to ten torpedoes at one time, with a reload time of six seconds.
Type: Mark XXV photon torpedo, capable of pattern firing (sierra, etc.) as well as independent launch. Standard explosive yield is rated at 18.5 isotons. Some ships also carry a small complement of quantum torpedoes, each with an explosive yield of approximately 50 isotons. Quantum torpedoes are not standard equipment on Federation starships. Tri-cobalt devices are also not standard equipment.
Payload: A Nebula-class vessel can carry a maximum of 250 torpedo casings, with approximately 25% of those casings (63) dedicated to sensor probes. When outfitted with the weapons pod, the number of torpedo casings carried increases to 450 in number.
Range: Maximum effective range is 3,000,000 kilometers. Maximum range before fuel exhaustion is 3,500,000 kilometers.
Primary purpose: Assault
Secondary purpose: Anti-spacecraft
DEFLECTOR SHIELDS
Type: Symmetrical subspace graviton field. This type of shield is fairly similar to those of most other starships. Under Starfleet Directives all vessels incorporate the nutation shift in frequency. During combat, the shield sends data on what type of weapon is being used on it, and what frequency and phase the weapon uses. Once this is analyzed by the tactical officer, the shield can be configured to have the same frequency as the incoming weapon - but different nutation. This tactic dramatically increases shield efficiency.
Output: There are ten shield generators on a Nebula-class starship, each generating a field of 384 MW in amplitude. During alert situations, up to six shield generators can operate in parallel phase-lock, providing a continuous output of approximately 2,304 MW. Peak momentary load of a single generator has been rated at 473,000 MW for periods approaching 170 milliseconds.
Range: The shields, when raised, operate at two distances. One is a uniform distance from the hull, averaging about 10 to 12 meters. The other is a bubble field, which varies in distance from any single point on the hull but has a common center within the ship.
Primary purpose: Defense from enemy threat forces, hazardous radiation and micro-meteoroid particles.
Secondary purpose: Ramming threat vehicles.
SECURITY LEVELS
Access to all Starfleet data is highly regulated. A standard set of access levels have been programmed into the computer cores of all ships in order to stop any undesired access to confidential data.
Security levels are also variable, and task-specific. Certain areas of the ship are restricted to unauthorized personnel, regardless of security level. Security levels can also be raised, lowered, or revoked by Command personnel.
Security levels normally in use aboard a Federation starship are:
Level 10 – Captain and Above
Level 9 – First Officer
Level 8 - Commander
Level 7 – Lt. Commander
Level 6 – Lieutenant
Level 5 – Lt. Junior Grade
Level 4 - Ensign
Level 3 – Non-Commissioned Crew
Level 2 – Civilian Personnel
Level 1 – Open Access (Read Only)
Note: Security Levels beyond current rank can and are bestowed where, when and to whom they are necessary.
The main computer grants access based on a battery of checks to the individual user, including face and voice recognition in conjunction with a vocal code as an added level of security.