Production information



Bilskirnir-class ship

Technical specifications

1,400 meters[1]


640 meters[1]

Engine unit(s)


Hyperdrive system


Power output

4,000,000,000 KJ/ms / 4,000,000,000,000,000 W /
4 PW[1]

Power plant

Asgard shields

Sensor systems

Sensor array

Control systems

Asgard stones


Cloaking device

Minimum crew


Other systems



While in Earth orbit: 028026005036011029
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Point of origin



Replicators (briefly)

The Biliskner was Supreme Commander Thor's personal vessel and the flagship of the Asgard fleet.

History Edit

The Biliskner was presumably quite old, as ships of her design were known to the Jaffa as objects of legend by the time Teal'c heard of them.

Thor was aboard the vessel when SG-1, along with Gairwyn, entered the Hall of Thor's Might and made contact with him. Beaming away Gairwyn through the obelisk transporter in the Hall presumably to receive exact information on the invasion, Thor traveled to Cimmeria. Thor was able to rapidly neutralize the Jaffa and landing pyramids for the Ha'taks of Heru'ur by beaming them away with the Biliskner's transporter arrays, though Heru'ur himself escaped through the Stargate. (SG1: "Thor's Chariot")

Thor arrived over Earth in the Biliskner to participate in negotiations with the Goa'uld System Lords to include Earth in the Protected Planets Treaty, in a bid to stave off an impending Goa'uld invasion. (SG1: "Fair Game")

While battling the Replicators, the Biliskner was boarded and headed to Earth. Colonel Jack O'Neill, Major Samantha Carter, and Teal'c were able to destroy her by sabotaging the deceleration drive, causing the ship to disintegrate in an uncontrolled entry into Earth's atmosphere. Unfortunately a single Replicator survived the ship's destruction, infested a Russian submarine sent to explore the ship's sunken wreckage, and nearly led to the infestation of Earth before SG-1, who had escaped the Biliskner before destruction by beaming Earth's Stargate aboard, destroyed it and the other Replicators it had created.

The success of the "primitive" tactics used to deal with the Biliskner's Replicator infestation would later convince the Asgard that a less technologically complex approach was needed to battle the Replicators in general. (SG1: "Nemesis", "Small Victories")

Notes Edit

Reactor power Edit

The Biliskner's maximum reactor output of 4 petawatt (4 x 1015 W) exceeds current real-world global energy consumption (12 TW / 1.2 x 1013 W in 2014) by a factor of approximately 330. That means that the Biliskner could power all of humanity's current energy needs with her power plant running at only 0.3% of capacity. This goes to show the size of the technological gap between humanity and the Asgard.

The world energy consumption figure used includes energy not only in the form of electricity, but also direct combustion of fuels (e.g. in automobiles, heating of buildings and water, industrial furnaces, chemical plants, etc.), direct use of solar (e.g. solar water heating cells), wind (e.g. windmills, where they still exist, sailing vessels, etc.), water (water wheels etc.), animal and human (horse carriages, draw and push carts, manual labour, etc.), and nuclear (nuclear-powered military ships) energy.

If raw consumption (includes losses in manufacture and transport) instead of final consumption (used above) were used for current humanity, global energy consumption would be about 18 TW and thus some 0.44% (1 in 225) of Biliskner's reactor capacity.

An energy output of 4 PW is equivalent to about 1 million current average-sized nuclear power plants. By comparison, the output of the power plant aboard a Nimitz-class nuclear-powered supercarrier is 194 MW; the Biliskner's power plant exceeds this roughly by a factor of 20 million.

The mean total energy that falls upon the Earth's upper atmosphere from the Sun is approximately 7.15 x 1017 W; this energy is responsible for the vast majority of chemical processes on Earth, including all life. It would take only 180 Biliskner-class ships with reactors running at full power to supply this much energy.


  1. 1.0 1.1 1.2 1.3 Stargate SG-1: The DVD Collection 20
    Some issues of The DVD Collection magazine are known to contain errors with respect to the dimensions they provide for spaceships. Dimensions for the same class of ship may vary between issues. The dimensions given in an issue may contradict how the ship visually appears on screen. The dimensions of two ships which appear similarly sized on screen may be given different measurements in The DVD Collection magazines. However, as the DVD Collection Magazines are officially licensed by MGM (and thus considered canon) Stargate Wiki includes them, while noting the apparent discrepancies in instances where they occur. See policy and List of spaceships by size for more information.

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