OVERVIEW: The 53-65KE is a Soviet export-version, ship-launched, wake-homing heavyweight torpedo introduced in 1972. It was designed for foreign surface combatants to engage enemy ships by passively tracking their wake.

DETAILS: The designation “53-65KE” refers to a 53 cm diameter torpedo of the 53-65 family, with “K” indicating a standardized design, and “E” denoting its export status. Based on the domestic 53-65K, the KE variant retained the same passive wake-homing seeker and thermal (kerosene-oxidizer) propulsion system but was modified for compatibility with foreign naval platforms. It carried a large high-explosive warhead and used contact detonation upon impact with the target’s stern area. Widely exported, it became the primary wake-homing torpedo in several Soviet-aligned and client navies.

TYPE: Heavyweight wake-homing torpedo

FUNCTION: After launch from a surface ship, the 53-65KE travels a preset straight distance, then activates its passive wake-homing sensor to detect and follow the target ship’s turbulent wake trail. It detonates on impact near the propulsion zone to inflict maximum structural damage.

NOTE:
IOC: 1972 (53-65KE)
Operators: India, Algeria, Syria, Cuba, Vietnam, Libya
Platforms: Kashin-class (export variants), Rajput-class destroyers (India), Project 159A (Petya-class), other Soviet-export frigates and 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 ; SIPRI Arms Transfers Database: https://armstrade.sipri.org ; Russian Naval Export Catalogues ; Naval Institute Guide to World Naval Weapon Systems