O'Neill

The O'Neill was the most advanced ship the Asgard had produced at the time. Named for Jack O'Neill of Earth, the vessel was designed solely to fight the Replicators. The hull was made of an alloy composed of naquadah, trinium, and carbon. However, the O'Neill was never put to combat use. When the Replicators attempted to invade Thor's homeworld, Samantha Carter came up with the plan to destroy the Replicator infested ships by using the O'Neill to darw them into hyperspace, thereby removing the Replicator infested ships of their shields, and rigging the O'Neill to self-destruct and destroy Replicator ships. While Thor was initially horrified by the plan, Carter convinced him, and the Replicator ships were destroyed.