Photographic material, ship models and equipment from the ships of this period based on the continuously changing technological conditions.
Frigates, submarines, destroyers, ships with directed missiles, anti-submarine helicopters etc.
Lifting a Minesweeper with a floating cistern
The floating tank is watertight on its sides, which when filled with sea, the tank sinks to the required depth and the ship enters. Then the pumps remove the water, the tank gets positive buoyancy and rises to the surface with the ship "seated" on the floor.
