 Many died there, and Moroz himself was killed in the naval battle off the island of Chios.During this time the Danube Sich reached its height, numbering 10,000-15,000 men, and controlling all of the Danube delta region with six villages being in personal control of the Kosh.In the Upper Dunavets there were 38 kurens under old traditional names of the Zaporozhian Sich.