The article is devoted to a review of the monograph by the St. Petersburg historian D. A. Bazhanov, the focus of which is an analysis of the situation in the Baltic Fleet in 1917. Based on unpublished archival materials, D. A. Bazhanov examines in detail the everyday life of sailors, their political sentiments, religiosity, the combat effectiveness of the fleet and its importance as a factor in big politics in 1917.