Battlestar Poseidon is a fan fiction series authored by Nick Yarka. It is set in the new universe (RDM). It is set within Dimension 29 of the Multiverse.
Battlestar Poseidon is set one year before the Fall of the Twelve Colonies. Vice Admiral Jason Marks is sent out with orders from Admirals Torres and Corman to find out what the Cylons are up to after nuclear weapons tests are seen across the Red Line. However, they are going against President Adar's wishes. They find many different things on their journeys.