Steamship Geiser New York Arrival 1882

My Swedish ancestors arrived in New York Sunday 14 May 1882 on the Danish Steamship Geiser. They were part of 788 steerage passengers and 65 First and Second passengers. The Captain was Frederick Schierbeck. My question involves the processing of the passengers. At that time the Thingvalla Company dock was at Watson's Stores in Brooklyn, then later at Fourth Street in Hoboken, New Jersey. Would the Geiser stop first at the company dock and off load steerage passengers to smaller steamers for Castle Garden? Or, did the Geiser anchor at Castle Garden and passengers disembarked there? Thanks in advance for any help Timothy Blomquist Farmington, New Mexico USA