Dashev
Dashev guarded the northern shore of the Dnipro-Bug estuary, where the rivers' waters reach the Black Sea. The fortress is associated with the Lithuanian grand duke Vytautas and appears in fifteenth-century records. Its position commanded the approaches to the estuary and the routes along the coast. The site later became known as Ochakiv, an Ottoman stronghold whose garrison sought to block Cossack flotillas travelling between the Dnipro and the open sea.