The T58 class were a group of minesweepers built for the Soviet Navy

Soviet Navy

The Soviet Navy was the naval arm of the Soviet Armed Forces. Often referred to as the Red Fleet, the Soviet Navy would have played an instrumental role in a Warsaw Pact war with NATO, where it would have attempted to prevent naval convoys from bringing reinforcements across the Atlantic Ocean...

 in the 1950s The Soviet Designation was Project 264

Design

The specification for these ships was issued in 1949 and the lead ship was completed in 1957. These ships were larger than the previous T43 class and had increased sweep capacity and were fitted with more advanced mechanical, acoustic and magnetic sweeps. Heavier self defence weapons were also fitted. The ships had steel hulls and were powered by 3 diesel engines(which were located on two levels to minimise length). No special provision was made to minimise acoustic or pressure signature. The ships were also fitted to operate in an NBC environment

Variants

• Project 254 A built from 1958 - Improved silening and degaussing
  Degaussing
  Degaussing is the process of decreasing or eliminating an unwanted magnetic field. It is named after Carl Friedrich Gauss, an early researcher in the field of magnetism...
  
   gear, new sonar and radar, 30mm guns instead of 25mm and RBU-2500 anti submarine mortars

• Radar Picket
  Radar picket
  A radar picket is a radar-equipped ship, submarine, aircraft, or vehicle used to increase the radar detection range around a force to protect it from surprise attack. Often several detached radar units encircle a force to provide increased cover in all directions.-World War II:Radar picket ships...
  
  version - 3 units converted early 1970s. Fitted with large radar installation aft replacing one twin 57mm gun turret

• Patrol ship - 19 units transferred to the Border Guard served until early 1990s

• Valdai class submarine rescue ship - 7 units fitted with diving support equipment