The Viper Mark II was the second generation of Viper space-superiority fighter used by the Colonial Fleet. The Mark II was used for much of the Cylon War, and while it was in the process of being replaced by the newer Mark III ten years in, it continued to see service at the war’s conclusion.^[2]
Many Mark II’s after the war were removed from service and scrapped,
though a squadron’s worth were tracked down and refitted in time for Galactica‘s decommissioning ceremony. Due to the lack of CNP and networking, the Mark IIs were immune to Cylon hacking, and these museum exhibits were made operational once more.

The Mark II is approximately 8.4m in length, and is powered by a small nuclearreactor.
It is capable of firing the same type of ammunition as the Mark VII,
which entered service over 30 years later, and both can be launched in
the same launch tubes, indicating a purposely standardised design.