The Strawhat Grand Fleet and their Ships

Orlumbus has 50 Nita Maria ships, 5 Santa Maria ships, and 1 Yonta Maria ship, in order of smallest to biggest.
Don Sai commands the Happou Navy, which consists of one Happousai ship and 7 smaller Ippousai ships.
Cavendish‘s ship is the White Horse of the Sleeping Forest.
Hajrudin‘s ship is Naglfarl.
Bartolomeo‘s ship, we already know is the Going Luffy-senpai.
Ideo and Leo don’t have ships of their own yet. They hitched on Orlumbus’ ships for the time being.

Source: SBS Volume 81