OVERVIEW: The AEG SUT Mod 264 is a heavyweight, submarine-launched, wire-guided torpedo developed by Germany for both anti-submarine (ASW) and anti-surface (ASuW) roles. It features advanced active/passive acoustic homing and enhanced guidance systems.

DETAILS: “Mod 264” is commonly used in export contexts to refer to the SUT Mod 2 torpedo, “SUT” stands for Surface and Underwater Target. The SUT Mod 264, built by Atlas Elektronik and entering service circa the late 1980s/early 1990s, retains the 533 mm diameter, electric silver-zinc battery propulsion, and heavy (~259 kg RDX) warhead of earlier variants. It matches the original SUT 264 baseline but with modernized onboard processing that improves performance against contemporary threats.

Compared to the Mod 1, Mod 2 has refined target discrimination and reliability under combat conditions. Its architecture remains legacy wire-guided without fibre‑optic, but aligns closely with the DM‑2 family in capability .

TYPE: Heavyweight Dual-Purpose Guided Torpedo

FUNCTION: Fired from 533 mm submarine tubes, it travels under wire guidance in the initial and mid-course phases, then switches to active/passive acoustic homing to silently and accurately strike submarines or surface vessels at long range.

NOTE:
IOC:~1990 (Mod 2); original SUT 264 IOC 1967 ; 2006 (South African Navy)
Manufacturer: Germany (Atlas Elektronik/AEG)
Operators: Argentina, Chile, Colombia, India, Indonesia, Peru, Portugal, South Korea, Taiwan, Turkey, Venezuela
Platforms: Manthatisi-class submarine (South Africa), Type 209-class submarines (various export models) 

SOURCE: Jane’s Naval Weapon Systems; Federation of American Scientists (FAS): https://man.fas.org/dod-101/sys/ship/weaps/index.html; GlobalSecurity.org; Wikipedia: https://en.wikipedia.org/wiki/SUT_torpedo