The lock at Rybinsk is at a busy junction, serving Volga River traffic headed to and from both Moscow and St. Petersburg. There are two parallel lock chambers, each 950 feet long and 98 feet wide. The rise/drop here is 46 feet but the chambers fill or empty rapidly.
Before the construction of the Rybinsk Dam, 1935-1941, the Sheksna River joined the Volga near this point. The locks are located in the bed of the Volga while the associated power plant lies in the bed of the Sheksna.
On the downstream side of the lock towers a plaque shows a Volga sailboat. This commemorates the unsuccessful peasant revolt in 1670, led by the Don Cosack, Stepan Razine.
We passed through this lock twice on our cruise from Moscow to St Petersburg. The downstream passage was around midnight. The photos were taken during the upstream passage, when the lock is filling to raise the ship.