Beginning as inland pirates, the Uskoci shortly turned to the seas once realizing the full potential of the geography of Senj. The land was protected by thick forests and mountains while the jagged cliffs near the seas prevented warships from entering. The seas in the Gulf of Quarnero were quite rough, which posed navigational hazards as further protection from their enemies.[18] Uskoks began their attacks upon Turkish ships with boats large enough to hold thirty to fifty men.[18]