Sailing ships used in the Crusades

by Nancy
(Scottsdale, AZ)

I write historical fiction.
Could any of the ships used in the early Crusades (c.1100) have had room below deck for passenger cabins? I keep wandering the internet looking up terms like naves, nefs, dromonz, esneccas, cogs etc. The configuration of ships with large rowing crews obviously would not work. But, the sketches I have found of sailing ships do not show below possible below deck designs. Do I need to place all passenger's quarters above deck--even if they are royal?