After transporting the Blackstar Company across the lake to the future site of Kingston to mine for much-needed coal for the winter, it later returned with an injured Fleck Blackstar aboard, who had been wounded by one of his men by accident.
When the Lords of Prey began their approach, the Vanguard set sail without taking on sufficient crew to balance the numbers between the three ships. It was later attacked on the lake and damaged, but was able to be repaired.
Whitson took it as his flagship once again upon departing Ayman Lake in search of a new home for his rabbits. It traveled in the company two other vessels, Steadfast and Burnley, the latter of which, led by the Grimbles, purposely wrecked its companions.