Difference between revisions of "POS Defense"

Revision as of 02:32, 3 January 2009

Text by Gienah Corvus

Introduction

Player Owned Starbases are one of two types of stations that can be operated in space by corporations and alliances. Starbases are an important and sometimes critical asset for many alliances, as they are used to construct advanced capital ships, store ships and supplies deep in space, conduct advanced blueprint research, and mine and combine moon metals necessary in the production of T2 ships and items. They are also used to gain and hold sovereignty in unregulated space, and can serve as well-fortified defensive combat stations and rally points. This article will discuss Player Owned Starbases, and how individual pilots can assist in defense by manually operating starbase weapons.

Player Owned Starbase Overview

Control Tower

The term Player Owned Starbase, often referred to as a Player Owned Structure, or POS, describes a collection of one or more items anchored together in space. Every POS consists of a Control Tower (Tower) and usually has several other structures. Control towers come in three different sizes for each race, and have faction upgraded versions available. Towers must be anchored near moons and brought online, and require constant fuel to remain online. Once online, a tower creates a large shield. Pilots can not target through the shield, so a pilot inside is safe from direct attack, but also cannot target opponents outside the shield.

Properly fueled towers (fuel type required is determined by the racial affiliation of the tower) create Powergrid and CPU. Similar to ship fittings, this grid and CPU is used to supply various additional structures anchored and brought online near the tower. Larger towers produce significantly more grid and CPU than smaller towers, but have increased fuel consumption as well.

Weapon Systems

The number and type of weapon and Electronic Warfare (EW) batteries that can be supplied by the tower will vary depending on other structures (mobile labs, hangar arrays, etc.) requiring tower resources, and the size of the tower. A large tower with only weapon and EW batteries (sometimes referred to as a "Deathstar") can supply a significant number of them with resources.

Starbase weapon batteries are anchorable versions of the weapons used by battleships and dreadnoughts, and have the same advantages and disadvantages of their ship counterparts. The battery versions generally receive significant bonuses to range and damage. The batteries are anchored and placed online outside the shield, allowing them to target (and be targeted by) hostile ships. Many batteries receive additional bonuses when used with a control tower of the corresponding racial type. However, due to the size of these batteries, they are generally very slow to lock targets, suffer a slow rate of fire, and in the case of turret batteries, have extremely slow tracking speeds. Weapon batteries are available in the types associated with their race. Turret batteries (hybrid, laser, and projectile) and missile batteries.

Weapon and Electronic Warfare Batteries

Sensor Resolution

A significant concern with POS defense is the amount of time required acquiring target lock with various sized weapon and EW batteries. The list below illustrates the scan resolution for various batteries.

• Small weapon batteries / 250mm
• Medium weapon batteries / 75mm
• ECM batteries / 50mm
• Large weapon batteries / 35mm
• Warp disrupter battery / 30mm
• Warp scrambler battery / 30mm
• Stasis webifier battery / 30mm
• Sensor dampining battery / 10mm

Tracking Speeds

Another concern is the slow tracking speed of the various turret batteries.

rad/sec (unmodified)

• Railgun Battery
  • Small 0.01104
  • Med 0.004106667
  • Large 0.00154

• Blaster Battery
  • Small 0.06
  • Med 0.0487125
  • Large 0.009278571

• Beam Laser Battery
  • Small 0.01056
  • Med 0.004367201
  • Large 0.001633333

• Pulse Laser Battery
  • Small 0.024761905
  • Med 0.020377358
  • Large 0.003802817

• Artillery Battery
  • Small 0.00704
  • Med 0.002566845
  • Large 0.0012

• AutoCannon Battery
  • Small 0.040228571
  • Med 0.03456
  • Large 0.006171429

Missile Batteries

Missile batteries have a slow rate of fire (24 seconds), and missiles take considerable time to reach their target. Due to these limitations, they are generally only suitable for use with Caldari towers, which grant them rate of fire and missile velocity bonuses.

Electronic Warfare Batteries

There are several Electronic Warfare battery types. Some towers grant bonuses to EW batteries associated with their race. The basic statistics are shown below.

• Electronic Countermeasures (ECM) Batteries
  • 200 Km optimal range, 100 Km falloff
  • Scramble strength primary race 45, all others 15

• Sensor Dampening Battery
  • 150 Km optimal range, 150 Km falloff
  • Scan resolution and targeting range –50%

• Stasis Webification Battery
  • 150 Km range
  • Velocity modifier –75%

• Warp Disruption Battery
  • 150 Km range
  • Warp scramble strength 3

• Warp Scrambling Battery
  • 75 Km range
  • Warp scramble strength 6

• Energy Neutralizing Battery
  • 250 Km range
  • 1,000 energy removed, 10 second cycle

Starbase Defense Operation

Automatic Defense

The starbase tower is the “brain” of its automatic defense. Corporation members with the Configure Starbase Equipment role configure the starbase to instruct it when to agress. It can be set to agress using several different criteria including standings and security status.

When a ship enters activation range, the tower determines if it is hostile, and if so, instructs the batteries to engage. It cycles through multiple targets somewhat randomly. Because of this random targeting, starbase batteries are best operated by corporation members.

Manual Starbase Defense

In order for a member to manually operate the starbase weapon and EW batteries, the member must have the Starbase Defense Management skill. It is skill in the “corporation management” category, and has a prerequisite of Anchoring V. Each level of Starbase Defense Management allows the member to control one additional battery, up to a total of five. Members must also have the Starbase Defense Operator role granted by a director or CEO in order to manually operate the batteries.

To control starbase batteries, the pilot must be within 15 KM of the control tower (inside the shield). Additionally, no ship weapons, propulsion, or other mods may be activated while controlling starbase batteries. The ship’s HUD is replaced by the icons for the weapons being controlled by the pilot.