The Ipposai ships are all smaller than the Happosai. They resemble Turtle Ships, with figureheads that resemble sea serpents.
In preparation for the Happo Navy and their allies to escape, the Ipposai were docked with several other ships far away from the coast. Once the entourage made it to the ships, the Ipposai set sail along with all the others. After the Happo Navy pledged their allegiance to the Straw Hat Pirates and partied to celebrate it, they sailed away on the Ipposai and Happosai.