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Heavyweight dual-purpose ASW and ASuW torpedo
DM2A4 is a heavyweight dual-purpose ASW and ASuW torpedo originating in Germany. Reported operators include Germany , Greece , Argentina , Chile , Colombia , Ecuador , India , Indonesia , Israel , Norway , Pakistan , Peru , South Africa , South Korea , Spain , Turkey , United Arab Emirates , Venezuela.
True scale
Sourced dimensions beside a 1.75 m human reference.
Points represent sourced observations, including revisions. Revisions on the same effective date are not separate inventory events. Ranges appear in the table and are not plotted as exact points.
| Observation / report period | Value | Source | Claim state |
|---|---|---|---|
| 1 Oct 2026 | 6.6 m | Wikipedia contributors | superseded |
| 2 Oct 2026 | 6.6 m | Wikipedia contributors | approved |
Heavyweight dual-purpose ASW and ASuW torpedo
Germany
2004
Germany , Greece , Argentina , Chile , Colombia , Ecuador , India , Indonesia , Israel , Norway , Pakistan , Peru , South Africa , South Korea , Spain , Turkey , United Arab Emirates , Venezuela
Atlas Elektronik
1530 kg
6.6 m (22 ft)
533mm
50 kilometres (27 nmi)
PBX
260 kg
Proximity or contact detonation
460 kg
Electric; silver-zinc oxide batteries or lithium ion batteries (for exercise)
50 knots (58 mph)
Wire-guided to autonomous (active and passive sonar , wake homing )
submarine
DM2A4 Seehecht (export designation " SeaHake mod 4 " ) is the latest heavyweight torpedo developed by Atlas Elektronik for the German Navy , as a further update of DM2 (Deutsches Modell 2) torpedo which was released in 1976.
The homing head's conformal transducer array permits detection angles of +/-100° in the horizontal and +/-24° in the vertical, therefore supporting larger acquisition angles in comparison to traditional flat arrays.
The weapon has a modular design that includes 2–4 silver-zinc oxide battery modules and is able to achieve a range of more than 50 km (27 nmi ) and a speed exceeding 92.6 km/h (50 kn ) powered by a high frequency permanent magnet motor, with a closed-loop cooling system independent from the environment. Exact performance data are classified. The torpedo design template may also be used as the basis for ROV . The weapon is armed with a 260 kg PBX ( RDX – aluminium ) warhead (equivalent to 460 kg of TNT ) with magnetic influence and contact fuzes . The charge and fuse are insensitive and electromagnetic pulse safe.
The weapon has a modular design that includes 2–4 silver-zinc oxide battery modules and is able to achieve a range of more than 50 km (27 nmi ) and a speed exceeding 92.6 km/h (50 kn ) powered by a high frequency permanent magnet motor, with a closed-loop cooling system independent from the environment.
The weapon has a length of 6.6 m when configured with 4 battery modules, and is respectively shorter when configured with either 3 or 2 battery modules depending upon the requirement of the operating unit. Diameter of the unit is 533 mm.
The weapon has a length of 6.6 m when configured with 4 battery modules, and is respectively shorter when configured with either 3 or 2 battery modules depending upon the requirement of the operating unit.
In May 2018, Hellenic Navy released a Request For Information letter (RFI), asking various companies for acquiring 533 mm heavy torpedoes for its four Type 214 Papanikolis submarines plus one updated Type 209 AIP Okeanos . In October 2020, DM2A4 was chosen as the preferred solution, with a program consisting of 36 DM2A4, plus refurbishment of a number of older SUT Mod0 to Mod4 standard, plus extra batteries for older SST torpedoes / SUT Mod0 torpedoes, with a total cost of 105 mln euro. In September 2021, the contract was modified, with a program consisting of 44 DM2A4, without refurbishment of a number of older SUT Mod0 to Mod4 standard, plus extra batteries for older SST torpedoes / SUT Mod0 torpedoes, with a total cost of 110 mln euro. Deliveries of the new torpedoes started in 2025.
DM2A4 Seehecht ( Atlas Elektronik ) Germany Heavyweight torpedo 533 mm (21.0 in) Type 212A class — Used with the Type 212A class , entered service in 2008. Pre-serie of 10 DM2A4. Some of the equipment of 69 DM2A4 have been modernised and tested since 2020.
Reference text from Wikipedia contributors, used under CC BY-SA 4.0.
DM2A4 equipment records. Variants, orders and quantities are shown as reported in each inventory source; coverage is incomplete.
Germany , Greece , Argentina , Chile , Colombia , Ecuador , India , Indonesia , Israel , Norway , Pakistan , Peru , South Africa , South Korea , Spain , Turkey , United Arab Emirates , Venezuela
Equipment reference ↗