The Sleeping White Horse of the Forest is a large and light-colored ship with a narrow, high-set hull. Its figurehead is a large white horse, and it has three large masts arranged in a triangular alignment. The aftcastle is shaped like a giant crown. The Sleeping White Horse has a large number of gun ports. In addition, it does have the Jolly Roger of the Straw Hat Pirate signifying their allegiance.
In preparation for Cavendish and his allies to escape, the Sleeping White Horse of the Forest was docked with several other ships far away from the coast. Once the entourage made it to the ships, the Sleeping White Horse of the Forest set sail along with all the others. After Cavendish and the Beautiful Pirates pledged their allegiance to the Straw Hat Pirates and partied to celebrate it, he sailed away on the Sleeping White Horse of the Forest.
Some time after leaving Dressrosa, Cavendish was on the deck with Suleiman and Farul as he was reminiscing of his past.