The likelihood of the arming of the Polish Navy two Swedish diesel-electric submarines has increased significantly. According to the portal defense24.pl, the Swedish Ministry of Defense sent a request to the Parliament for the sale of two Södermanland diesel-electric submarines.
As it became known earlier, the Swedish military has been negotiating with the Polish Ministry of Defense for a long time to sell 2 diesel-electric submarines of the Södermanland type. The Polish Navy command expects that the acquisition of Swedish submarines will significantly increase the combat potential of the republic’s naval forces. According to the plans of Poland, the submarines must act in turn: first, the Swedes will transfer the submarine HMwMS Östergötland, and then the second - HSwMS Södermanland. These submarines should replace the obsolete Kobben type submarines produced in the 60s in the Polish Navy.
Södermanland type submarines are a series of Swedish diesel-electric submarines. The Swedish Navy initially had four submarines of the Västergötlandsklass type, two of which underwent a radical modernization in 2000-2005, having received an elongated hull and VNEU, which is a Stirling engine. After modernization, they received the designation Södermanland - HMwMS Östergötland (commissioned in 1990) and HSwMS Södermanland (commissioned in 1989).
TTX submarine: Underwater displacement - 1500 tons, Maximum length (on design waterline) - 60,5 m, Width - 6,1 m, Average draft - 5,6 m. Power plant - 2 Hedemora Diesel V12A / 15-Ub, 2 diesel engines 160 hp, 2 Kockums v4-275R Stirling engines, 1 propeller shaft. Speed (surface) - 11 knots, underwater - 20 knots, immersion depth - 300 m, autonomy - 45 days, crew - 20 people, including 5 officers.
Armament: 6 bow 533 mm torpedo tubes (12 torpedoes) and 3 bow 400 mm torpedo tubes (6 torpedoes), mines.