Part I. Kronstadt Chapter 1. Geographical Notes Kronstadt is a fortress, or rather, a fortified city, built two centuries ago on the Island of Kotlin, 30 kilometers west of St. Petersburg (now Leningrad) at the lower end of the Gulf of Finland. It defends the approaches from the Baltic Sea to the former capital, and is also the principal base of the Russian Baltic Fleet. The Gulf of Finland is frozen in winter, and communication between Kronstadt and Leningrad is carried on, for five months of the year (from November to April), over a snow road on top of the thick ice of the Gulf. Kotlin Island — a narrow, elongated piece of land with very irregular contours — is 12 kilometers long. Its greatest width is from 2 to 3 kilometers. Its coasts are inaccessible and well fortified. The eastern part of the island, which faces Leningrad, contains the city of Kronstadt, the port and the docks, and occupies about a third of the total area. T...