William T. Riker’s command, the U.S.S. Titan, as seen in Star Trek: Lower Decks. First mentioned in Star Trek: Nemesis, the Titan became a spinoff series of Star Trek Novels, where this design debut. From Memory Beta:
When Pocket Books launched the Star Trek: Titan book series, they held a competition to design the new Luna class. The winning design by Sean Tourangeau was announced on October 6, 2005. Tourangeau then worked with artist Ellery O'Connell to develop a 3D model of the Titan, which debuted on the cover of the fourth Titan novel, Sword of Damocles.
I’d say they stayed pretty faithful to the model:
Here’s the design they submitted, which iirc was a fold out insert: