Galactica Type Battlestar/jp:ギャラクティカ型バトルスター
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The original battlestars were space-going leviathans of more than 4700 feet (1400 meters) in length, housing at least 4 squadrons of 20 Viper space superiority fighters apiece and nuclear warheads. A fully-armed battlestar is capable of a wide range of offensive actions, while her defensive armaments ensure she is fully capable of both protecting herself from attack and engaging an enemy at close quarters.
Following the end of the war, the original battlestars remained in service and many newer battlestars were built. At the time of the Fall of the Twelve Colonies, the newer Mercury class represented the top of the line. Ships such as these and the Valkyrie type battlestars have nearly completely replaced the original battlestars, making Galactica the last of this unnamed class still in its original condition. A few other ships of the class remained in service, although it is likely that these battlestars shared only their external configuration with Galactica, and were upgraded and thus more technologically advanced .
The design common to Galactica and her sister ships can be broken down into two main sections: the main hull, and the twin flight pods.
This comprises the bulk of a battlestar and can itself be divided into three sections:
The midships area contains the pod retraction mechanisms and crossways linking the hangar decks for the transfer of equipment and personnel (Miniseries).
The stern section contains sublight engines, FTL drives, etc. Four of the sublight engines are in engine pods, and two more are between the pods.
The flight pods are mounted on either side of the hull and contain a battlestar's Vipers and Raptors. During normal operations, they are extended away from the main hull. During FTL jumps, the pods are retracted against the hull, concealing their open ends and making launches and landings impossible, not including Viper launching; however, this would prevent the return of those Vipers. Each pod comprises two main decks for flight operations: the upper landing bay, which extends the full length of the pod, and the lower launch bays, which provide some 40 launch tubes per pod.
Landing approaches are made from the stern. The preferred approach is a slow run into the landing bay, prior to making a vertical landing on a defined landing area (Act of Contrition). However, in emergencies, combat landings can be made, in which a craft approaches and lands at high speed on its landing skids (Miniseries).
The hangar deck is used for maintenance, repair, refueling, rearming, and launch operations and runs the length of the flight pod.
Despite their massive size, battlestars are extremely maneuverable and can dock with space stations such as Ragnar Anchorage. Battlestars are not designed for atmospheric flight, although their hulls can manage a tenuous upper atmospheric storm like that surrounding the gas giant Ragnar (Miniseries) and can survive a jump and subsequent freefall into the atmosphere of a habitable planet (Exodus, Part II). A battlestar's FTL systems are capable of accurate jumps, able to place them in synchronous orbit above a relatively close planet and of placing them safely in the midst of an asteroid field (The Hand of God), a dense fleet of ships (Scattered), or a planetary atmosphere. However, they are grossly inferior to Cylon systems in terms of safe range (Kobol's Last Gleaming, Part I).
Battlestars are intended to operate for long periods without re-supplying. Their water purification capabilities alone are so efficient that, barring an emergency or unforeseen event, a battlestar can operate "for several years before replenishing" (Water). They also appear capable of undertaking large-scale repairs following battle damage (Miniseries, "Water"). They have ammunition assembly capabilities in the armory (Epiphanies) and may have small general fabrication facilities (Litmus). Vegetable stores and canned goods are kept in titanium lockers (Final Cut). Battlestars are capable of continuing combat operations despite suffering massive damage, as evidenced by Galactica's continuing effectiveness at defending the fleet years after the first Cylon attack and following several punishing engagements (He That Believeth In Me).
The original battlestar vessels deliberately avoided the use of networked primary computer systems during the Cylon War, as Cylon forces were adept at infiltrating and subverting such systems (Miniseries).
On Galactica, in the post-Cylon War era, these primary computers remained isolated by practice on order of its last pre-Holocaust commanding officer, William Adama. This no-networks practice saved Galactica from the fate of its sister battlestars in the Fall of the Twelve Colonies as Galactica's no-network order meant that the CNP, installed in almost all Colonial Fleet vessels at the time, could not be used aboard Galactica as the CNP was designed for use with a computer network.
In one dire instance in the early months of their exodus, Galactica networks its primary computers temporarily to aid in computation speeds for jump calculations needed to find the missing civilian Fleet (Scattered), but it is not without consequence. One or more computers are cracked during a Cylon attack with a Cylon virus, which proves resistant to removal and (weeks later) threatens the operation of the battlestar until the computers' hard drives are erased and restored from pre-Fall backup sets (Flight of the Phoenix).
Galactica's crew complement prior to her scheduled decommissioning was approximately 2,800 . This figure is almost certainly higher for a fully staffed, operational battlestar.
Approximately twelve oxygen recirculation units are mounted throughout the ship, which replenish oxygen as well as remove ("scrub") carbon dioxide from the air. These devices work continuously (Final Cut).
Known Galactica type battlestars