Here are some photos from the two largest shipyards of Saint-Petersburg: "Baltic shipyard" and "Admiralty Shipyards".
The second one is one of the oldest shipyards in all Russia. It is also the first industrial company of St. Petersburg (since 1704).
For the period of more than 300 years the shipyard built more than 2600 ships of various types and classes: the first Russian ships, battleships and cruisers, the world's first nuclear-powered icebreakers, research and submersible vehicles, tankers, more than 300 submarines of different projects that have no analogues in the world shipbuilding.
A submarine is being built.
They plan to build three submarines for the Black Sea Fleet in the nearest time.