OVERVIEW: The 53-57 is a Soviet ship-launched, pattern-running heavyweight torpedo introduced in 1957 for surface vessels. It was developed to engage enemy surface targets using a preset zig-zag pattern without homing capability.

DETAILS: The designation “53-57” indicates a 53 cm diameter torpedo developed in 1957, and it is known in NATO reporting as “53-56” due to early misidentification. It was a further refinement of the 53-56 design, optimized for surface ship deployment with enhancements in reliability and detonation mechanisms. The torpedo used a wet-heater propulsion system and carried a large high-explosive warhead with contact and magnetic influence fuzing. It relied on preset gyro and pattern-running settings, requiring accurate fire control input prior to launch.

TYPE: Heavyweight pattern-running torpedo

FUNCTION: After launch, the 53-57 runs straight for a preselected distance before entering a programmed zig-zag pattern to sweep an area for surface targets. It was designed for use against enemy ships and detonated on contact or magnetic influence.

NOTE:
IOC: 1956 (53-56), 1957 (53-57)
Operators: Soviet Union
Platforms: Kotlin-class destroyers, Skoryy-class destroyers
Conflict used in: No confirmed combat use

SOURCE:
Jane’s Underwater Warfare Systems ; Federation of American Scientists (FAS): https://fas.org/man/dod-101/sys/ship/weaps/index.html ; Naval Institute Guide to World Naval Weapon Systems ; Russian Navy Historical Ordnance Archives