The Dewalt is the personal ship of Camina Drummer.
Drummer acquired the ship when she formed her own faction of the Outer Planets Alliance and took leave from Fred Johnson's OPA faction. She uses the ship along with the Mowteng to enforce her status as a powerful pirate that obtains 10% of the gains from any pirates in her area of space. Dewalt is the de facto flagship of her own pirate fleet.
Drummer along with her crew aboard the Dewalt found the perforated and stripped husk of the OPAS Tynan, confirming that Klaes Ashford was killed by Marco Inaros. She and her crew salvaged the Tynan and absorbed it into their fleet.
The Dewalt remained part of the Drummer faction throughout the Free Navy Conflict. It was along with the Mowteng and Tynan, as well as the Free Navy ships Serrio Mal and Koto, tasked to destroy the Rocinante. When Camina refused to abide by Marco's orders of destroying the ship and instigated a mutiny on board the Tynan, she fired a torpedo at the Dewalt's drive cone, disabling its engine and preventing it from engaging in battle, as Oksana, the executive officer on board, was loyal to the Free Navy.