This book (one of a series of two covering vessel enrollments at Sydney between the dates of 1860 and 1875), lists the shipowners alphabetically by surname, with each of their vessels listed underneath with all of their relevant details (such as what it was made of, was it a brig, barque or schooner, the tonnage, with size of the vessel, its other owners and dates, and various information if there is more detail).
Covering I-Z, this volume starts at Illawarra and continues through to Young (there were no Z's). There is also an index included for ease of use.