“Big Hunter”, as a type of small anti-submarine ship (the concept was formulated back in the 20s - “submarine finder”), was created in our country literally on the eve of the Great Patriotic War. In those years, given the growing role of submarine forces in the armed struggle at sea and the need to strengthen and improve anti-submarine defense forces and means, the leadership of the USSR Navy decided to create a new subclass of warships - large submarine hunters.