OVERVIEW: The SUT Mod 1 is a heavyweight, submarine-launched, dual-role torpedo developed by West Germany for anti-submarine and anti-surface warfare. It is an improved wire-guided system derived from the original SUT design, featuring active/passive acoustic homing and enhanced engagement range.

DETAILS: "SUT" stands for Surface and Underwater Target, reflecting its dual-role mission profile. The Mod 1 version is based on the original SUT (1967) and was developed by Atlas Elektronik as a modernized export-oriented upgrade, entering service in the early 1980s. The SUT Mod 1 retains a 533 mm diameter, electric propulsion powered by silver-zinc batteries, and a 259 kg high-explosive warhead. It incorporates improvements to seeker performance, wire-guidance reliability, and electronics for enhanced target discrimination. The torpedo supports both passive and active homing modes and is compatible with standard submarine launch tubes.

TYPE: Heavyweight Dual-Purpose Guided Torpedo

FUNCTION: Launched from 533 mm submarine tubes, the SUT Mod 1 uses wire guidance during the initial and mid-course phase, then switches to passive or active acoustic homing in the terminal phase. It is designed to engage both surface ships and submarines in blue water and littoral zones with high stealth and accuracy.

NOTE:
IOC: 1967 (SUT), early 1980s (SUT Mod 1)
Manufacturer: West Germany (Atlas Elektronik)
Operators: Argentina, Chile, Colombia, India, Indonesia, Peru, Portugal, South Korea, Taiwan, Turkey, Venezuela
Platforms: Type 209-class submarines, Shishumar-class (India), U-209PN (Portugal)
Conflict used in: None confirmed

SOURCE:
Jane’s Naval Weapon Systems ; Federation of American Scientists (FAS): https://man.fas.org/dod-101/sys/ship/weaps/index.html ; GlobalSecurity.org: https://www.globalsecurity.org/military/world/europe/sut.htm ; Military-Today: https://www.military-today.com/navy/sut.htm ; Wikipedia: https://en.wikipedia.org/wiki/SUT_(torpedo)