Silent drive is the basis for a submarine rescue operation. Developed by the Norwegian company STADT Naval AS, the electrical powertrain uses alternating power alternatively than constant power for distribution. This not only eliminates electromagnetic interference, but importantly reduces underwater noise. This is the kind of drive that will be equipped with the ORP "Rescuer".
The choice of the drive squad for the fresh warship is 1 of the most hard decisions to be made by the squad of engineers liable for designing and building the unit. The installed engine must not only meet the expected parameters in the field of alleged seaworthiness, i.e. velocity of swimming and steerability, but besides in the tactical field – concerning e.g. the level of underwater sound emission, which is of large importance for detection of the unit by enemy submarines.
War Shipyard PGZ reported that built by the ORP “Savier”, which has, if necessary, assistance to crews of damaged or broken submarines, will be equipped with an electrical powertrain of the Norwegian company STADT Naval AS.
Five variable-stroke screws installed in the Rescue (main, reared stern and forward transverse) will supply an electrical strategy of 8,000 kW, along with the AC 690 V main switchgear. What distinguishes the Norwegian solution against the ‘engine’ competition is the fact that it is utilized to transfer power exclusively to AC alternatively than DC. As the constructors provide, thanks to this technology, called thin Propulsion, the propulsion unit not only guarantees the simplification of electromagnetic interference, but besides importantly reduces the level of sound generated by the submarine.
Marcin Ryngwelski, president of the PGZ War Shipyard, convinces about the advantages of the solution of the Norwegian producer. “For the “Ratownika” we chose the highest-class solutions – an highly quiet electrical drive is an absolute necessity in the rescue operations of submarines. We show that Polish shipyards can carry out projects at a global level," Ryngwelski emphasizes.
In order to install electrical motors in their Norwegian ships, the Spaniards, among others, decided to install the latest 1 (commissioned in 2024) logistics support unit “Cartagena” (A-62) with thin Propulsion technology.
