Canberra-class combat orbitor

The Canberra-class combat orbitor (: CO) is an ancient model line of four constructed in the Simpson desert for the Royal Australian Navy. Released during a time when space technology was in its infancy, the Canberra-class was built as an Orbitor in the strictest sense of the word, providing high-orbital defence, protection against ballistic missiles, and escorting and checking merchant freighters entering Earth's airspace. Considered to be well-armed at the time of their launch, these ships would form the backbone of Australia's fledging navy for the important formative years of humanity's early spacefaring history.
Originally intended to be paired with the first practical , the Canberra-class was an important part of the Australian Space Defence Program (ASDP). While the program emphasised the mass-deployment of submarine-inspired , the Canberra-class starships were intended to apply actual fighting capabilities for the purposes of force-projection and deterring .
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== Ships of the Line ==
Name 	Hull Classification Symbol	Commissioned 	Destroyed 	Notes
HMAS Canberra	CO-01 	January 26, 2129	2154 	Lead ship of the class, severely damaged by explosive-filled yachts in 2139, decommissioned and scrapped in 2154.
 	CO-02 	October 22, 2135	November 2552	One of only two pre- orbitors to survive the twenty-second century, decommissioned and restored as a museum ship. Intentionally destroyed during the Battle of Earth.
UNSC Perth 	CO-03 	2136 	 	Assigned as a permanent guard of Australia, destroyed during a trap while pursuing a Koslovic smuggling vessel.
UNSC Sydney 	CO-04 	2138 	 	Employed as a pirate hunter and substitute for her sisters, destroyed in battle against Koslovic remnants.
== References ==
Category:Orbitor classes