With the initial investment of £4,200, they took a lease of premises on the current site of Wapping Police Station and appointed a "Superintendent of Ship Constables" with five "surveyors" to patrol the river, day and night. These surveyors were rowed in open galleys by "police watermen". They also had four surveyors visiting ships being loaded and unloaded, with "ship constables" (who were appointed and controlled by the Marine Police Force but paid for by ship owners) supervising gangs of dockers. A "Surveyor of Quays" with two assistants and thirty "police quay guards" watched over cargoes on shore.