Locking Facility C-1

The C-1 navigation lock is located at the western tip of Kotlin Island in Kronshtadt and is designed to protect against storm surges. Its scheme, similar to the Dutch Maeslantkering barrier, includes two submersible caissons that close a 273-meter-long shipping channel. Vessels traveling from St. Petersburg through the Neva Bay pass through this deep-water fairway, where the Kronshtadt Ship Channel has a width of 150 m and a depth of 14–16 m. The channel was officially opened on October 7, 2008, when the ferry "Georg Ots" on the St. Petersburg — Kaliningrad route was the first to pass through it.