OVERVIEW: The DM1 Seeschlange is a West German lightweight, submarine-launched, wire-guided acoustic torpedo introduced in 1976. It was designed for anti-submarine warfare in confined, shallow-water environments such as the Baltic Sea.

DETAILS: The designation “DM1” identifies the first German postwar torpedo adopted into service, and “Seeschlange” translates to “Sea Serpent.” Developed by AEG-Telefunken beginning in the early 1960s, the torpedo was optimized for use aboard small coastal submarines, especially the Type 206. It featured a 533 mm diameter, electric propulsion driven by silver-zinc batteries, and a 100 kg high-explosive warhead. The system was wire-guided with active acoustic homing and a reattack capability, with a maximum range of 6 km and a top speed of 33 knots.

TYPE: Lightweight wire-guided acoustic torpedo

FUNCTION: After launch from a submarine, the DM1 is steered toward the target using wire guidance and activates its onboard sonar in the terminal phase to search for and home in on enemy submarines. It detonates on contact, with re-acquisition capability if the first approach fails.

NOTE:
IOC: 1976 (DM1 Seeschlange)
Operators: West Germany
Manufacturer: AEG-Telefunken, Germany
Platforms: Type 206 submarines
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 ; R. Singh, German Torpedoes Post World War II (Scribd): https://www.scribd.com/document/396652033/OpenSourceIntelligenceProject2011-Naval-v1-pdf