Bilskirnir-class ship

The Bilskirnir-class ship, also known as an Asgard Mothership, is a starship used by the Asgard.

Overview
The Biliskner class motherships were the primary type of ship used by Asgard race. They had a distinctive shape with a hammer style front with wings by the side and a grayish hull. The sensors of these Asgard motherships were quite accurate and capable of detecting movements within the vessel should intruders board the craft. This included a type of thermal sensor which allowed for the detection of warm blooded organisms moving about the ship in case the primary internal sensors were disabled.

They possessed an automated medical system allowed for the healing of injured crewmen. However, it was possible to tamper with the system which was capable of killing an Asgard in the process. It included a medical stasis pod that can be used by the ship's Asgard commander in the event of a dire emergency. The ship also contained a phase generator which emitted a subspace field which was deflected by certain systems in the ship. This in turn meant that the ship was incapable of tolerating an uncontrolled re-entry into a planet's atmosphere. Biliskner class vessels were powered by four neutrino ion generators which produced an engine output of a maximum of one billion Earth kilojoules.

Such ships were more than a match for several standard Goa'uld Ha'tak motherships, although warships modified with Ancient technology by Anubis have been known to pose a greater threat.

Weapon Systems
They were equipped with a forward firing energy based weapon which served as its primary armament.

These seemed to be at first more then capable of dealing with Goa'uld Ha'taks until Anubis began modifying the shields of his ships with Ancient technology.


 * Its unknown what kind of energy weapon this was except that it fired bluish beams of energy. It is possible that they might have been a weaker variant of the Asgard plasma beam weapon but this is speculation.

Defensive Systems
A powerful shield protected the ship from external threats to the Asgard ship. This included powerful shocwaves from vessels that detonated some distance away. However, the shield was incapable of protecting the vessel from explosives inside the shield barrier, close to the hull itself.

Internally, the ships included the use of internal dampening fields which activated in the event of an explosion. This prevented the use of explosive devices inside the ship and dampened the impact they had if they were triggered inside the vessel.

The ship included a form of cloaking device which did not distort the appearance of the vessel but rather made it invisible to primitive scanning technology.

Engine System
The Biliskner had the capability of crossing the galaxy in a matter of minutes and were even capable of crossing the intergalactic void to travel between galaxies. The speed of this was hampered if the vessel was towing another vessel along with it through hyperspace.

Forward propulsion was achieved through the use of two rear thrusters. A specific engine within the vessel allows for re-entry and was known as the deceleration drive.

Transporter Array
Like most Asgard vessels, the Biliskner class possessed a number of Asgard transporter arrays located on the ship. These were all aimed in different directions and allowed for maximum coverage. After entering a specific code into a computer terminal, the transporter array activated and the targeted material will be transported to an indicated cargo hold.

The array included an outbound transporter technology allowing for crew to escape the ship and move to external locations such as a planet. In case of Replicator infestation, the ships outbound transporter was destroyed to prevent the Replicators from escaping the ship. It was capable of being pre-programmed by the crew in order to aid others who use the system in the future.

The Asgard were capable of using the transporter array against armies on a planet and was capable of dematerializing them thus removing them as a threat.


 * It's unknown what happened to these individuals that were dematerialized. They may either still exist in the transporter system, killed or transported to prison chambers.

Bridge
The primary location of the Biliskner class from which the vessel was controlled. It resembled a large pillar of light with numerous platforms present through which the ship was commanded by the crew. The bridge was also the home of the navigational computer allowing for the alteration of the vessels position.

The Replicators were known to infest the bridge of these ships in order to take control of them and also disable the ships internal sensors preventing their detection by the crew.

Computer Room
It was possible through the use of the computer terminal to chart the progess of crew inside the vessel and detected hostile threats to the crew. Locations of the ship that were disabled flashed on the screen. It further allowed for magnification to certain areas in order to gain a better vew of certain locations of the ship. It also allowed for the manipulation of the transporter array through the use of the stones on the central terminal.

In addition to this, a user in the control room was capable of manipulating the stones to activate the vessels Asgard holography allowing them to appear on a planet and communicate with others. Furthermore, the computer room was capable of being programmed to provide instructions to crew who were not familiar with Asgard technology.

Airlock
The ship contained a number of airlocks allowing for crew to enter or exit the vessel. Internally, the chamber had a doorway which was closed and had a control by the side which resembled the shape of Asgard stones.

The top stone controlled the inner door, the middle stone depressurised the chamber and the bottom stone opened the external hatch. A similar set of controls existed on the outside allowing for individuals in space suits to open the hatch and enter the ship.

History
The first sighting of a Bilskirner vessel was on the Protected Planet Cimmeria which had been invaded by the Goa'uld Heru'ur. SG-1 had sent a warning to the Asgard of the invasion of the planet, a cry for help answered by Thor who arrived and use his vessel to defeat the assembled army forcing Heru'ur to retreat through the Stargate.

During the Asgard-Replicator war, many Bilskirnir class ships were infested by Replicators which took control of them and turned them against their own creators. A fleet of three such vessels were on a course for the Asgard homeworld but were destroyed when the prototype O'Neill-class ship self destructed in Hyperspace which destroyed the ships.

This class of ship were being slowly phased out in favor of the O'Neill-class cruiser.

Stargate SG-1

 * Thor's Chariot
 * Fair Game
 * Shades of Grey
 * Nemesis
 * Small Victories