It is 23:19 and we are here looking over the
downstream gate of the lock #6, the closest one to Moscow, on the Moscow-Volga
Canal. Note the large drop (over 8 meters) we will have before the gate is
opened. This is a single lock. That means that the barges waiting there to move
upstream will enter the lock after we pull out. Then the lower gate will close
and the lock will fill with water, raising them to the level of the canal
upstream. Note that the downstream gate is a swing gate because it operates
above the level of the water when being opened.