The 67m-long, 7.1m-wide diesel-electric submarine "Saint Petersburg" of 677 Project, Lada Class of 1765 displacement tons. The maximum underwater and surface speed of the ship reaches 21 and 10 knots respectively. The warship can cover 650 miles, sea endurance of the ship - 45 days. Maximum diving depth - 300 m.
This Project warship is designed for the destruction of the enemy’s submarines, surface vessels and for reconnaissance. The submarine can protect its Naval bases, sea and onshore communications.