DM2A4

Being the successor of the DM2A3, it features an advanced electrical propulsion system and a fiber-optic cable for torpedo guidance and communication, which, in conjunction with advanced signals processing and mission logic, makes the torpedo largely countermeasure resistant. The DM2A4/SeaHake mod 4 is the first torpedo ever to be guided by a fiber optic wire.{{cite web|url=http://www.subsim.com/radioroom//archive/index.php/t-90065.html|title=Todays Torpedoes [Archive] - SUBSIM® Radio Room Forums|website=www.subsim.com}} With a fully digital system architecture, increased range and speed and its new conformal array sonar with a very wide panoramic sensor angle as well as the additional wake homing sensor, the DM2A4/SeaHake mod 4 provides greatly advanced performance over its predecessor. The homing head shell is a hydrodynamic optimised parabolic shape which aims to reduce torpedo self-noise and cavitation to an absolute minimum. 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 wide angle array is designed to reduce maneuvering when in search and reconnaissance stages, therefore also reducing self-noise and preserving battery power.

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.{{cite web|url=http://articles.janes.com/articles/Janes-Navy-International-95/GERMAN-DM2A4-PROPULSION-DECISION.html|archive-url=https://web.archive.org/web/20110811212508/http://articles.janes.com/articles/Janes-Navy-International-95/GERMAN-DM2A4-PROPULSION-DECISION.html|url-status=dead|archive-date=11 August 2011|title=Defense & Security Intelligence & Analysis: IHS Jane's - IHS|website=articles.janes.com}} The torpedo design template may also be used as the basis for ROV.{{cite web|url=http://www.navweaps.com/Weapons/WTGER_PostWWII.htm|title=World War II Torpedoes of Germany - NavWeaps|first=Tony|last=DiGiulian|website=www.navweaps.com}} 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 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 torpedo is in service with the German Navy Type 212 submarines, has been delivered to the Pakistan Navy for service in the Agosta 90B submarines, has been selected by the Spanish Navy for its new S80A submarines and has been sold to other operators worldwide.{{cite web |url=http://www.marine.de/portal/a/marine/start/waffenun/waffen/torpedos/!ut/p/z1/hY_RC4IwEMb_I29aS33UVBJkBUbpXmK4YQvbZCzpoT--SeCbdA8f3Pfd_Y4DCg1QxSbZMyu1YoPrW7q7pVF1roI4CKoCJajMc3LAuPRxuIULXP-NUBejlUoQ1FxA6xjhOmMDNVCgXHidVsLOaoWy0mlvmNXGG7Wxw5y8jHGJJzm0yM9SFC6n_E-Y7UkTBzguSXGcgQ82sfeyy7r5aWjvTPFBnHSX_IzxWUSE4P4LV4iIDQ!!/dz/d5/L2dBISEvZ0FBIS9nQSEh/#Z7_B8LTL2922LF0A0IEENH55I1573 |title=Uboot-Torpedos |language=German |publisher=German Navy |date=23 June 2016 |accessdate=10 March 2017}}{{cite magazine |url=http://www.nafomag.com/2014/11/atlas-elektronik-gmbh-at-ideas-2014-in.html |title=ATLAS Elektronik GmbH at IDEAS 2014 in Karachi |date=28 November 2014 |magazine=Naval Forces |accessdate=10 March 2017 |archive-date=11 May 2017 |archive-url=https://web.archive.org/web/20170511164030/http://www.nafomag.com/2014/11/atlas-elektronik-gmbh-at-ideas-2014-in.html |url-status=dead }}{{cite book|title=Israel and Syria: The Military Balance and Prospects of War |publisher=Praeger Security International |first1=Anthony H. |last1=Cordesman |first2=Aram |last2=Nerguizian |first3=Inout C. |last3=Popescu |page=127 |isbn=978-0313355202|year=2008 }}

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.{{cite web |url=http://www.defense-aerospace.com/articles-view/release/3/193565/greece-releases-rfi-for-new-heavy-torpedoes.html/ |url-status=dead |archive-url=https://web.archive.org/web/20180610125838/http://www.defense-aerospace.com/articles-view/release/3/193565/greece-releases-rfi-for-new-heavy-torpedoes.html |archive-date=10 June 2018 |title=Greece Releases RFI for New Heavy Torpedoes}} In October 2020, DM2A4 was chosen as the preferred solution, with a program consisting of 36 DM2A4, plus refurbish of number of older SUT Mod0 to Mod4 standard, plus extra batteries for older SST torpedoes / SUT Mod0 torpedoes, with a total cost of 105m euro.{{Cite web|url=https://www.ptisidiastima.com/contract-for-hellenic-submarines/|title=ΕΠΙΤΕΛΟΥΣ: Υπογραφή σύμβασης για τις τορπίλες των υποβρυχίων, σε συνολική λύση πήγε το ΠΝ!|date=31 October 2020}} 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 110m euro.{{Cite web|url=https://www.ptisidiastima.com/44-new-torpedoes-for-hellenic-navy/|title = EΞΕΛΙΞΗ: Έκλεισε το θέμα των τορπιλών υποβρυχίων, 44 νέες τορπίλες για τα ελληνικά Type 214HN|date = 4 September 2021}}

The SeaHake Mod 4 torpedo is in service with eighteen countries and over 300 torpedoes (as of 2015){{cite web|title=Big hitters: heavyweight torpedoes follow an incremental course|url=http://www.janes360.com/images/assets/551/51551/heavyweight_torpedoes_follow_an_incremental_course.pdf|author=Ben Goodlad|author2=Luca Peruzzi|author3=Richard Scott|website=Jane's 360|language=en|date=2015|accessdate=28 May 2017|archive-date=28 May 2017|archive-url=https://web.archive.org/web/20170528063429/http://www.janes360.com/images/assets/551/51551/heavyweight_torpedoes_follow_an_incremental_course.pdf|url-status=dead}}. have been delivered:

; {{flag|Egypt}} (25)

: Ordered in 2019 to equip the four new Type 209/1400mod.{{Cite web |title=Type 209-1400 class Submarine SSK Egyptian Naval Force Navy |url=https://www.seaforces.org/marint/Egyptian-Navy/SUBMARINES/Type-209-1400-EN-SSK.htm |access-date=2024-12-21 |website=www.seaforces.org}}{{Cite web |date=July 2024 |title=Page 8 - Egypt - Länderinformationen zu den Europäischen Kriterien für Waffenexporte |url=https://www.ruestungsexport.info/user/pages/04.laenderberichte/aegypten/2024_Aegypten.pdf |language=de}} The DM2A4s are ordered in a small quantity, and complete the order of 125 SUT torpedoes.

; {{flag|Germany}}

: Pre-series of 10 DM2A4.{{Cite web |title=Todays Torpedoes [Archive] - SUBSIM Radio Room Forums |url=https://www.subsim.com/radioroom/archive/index.php/t-90065.html |access-date=2024-12-21 |website=www.subsim.com}}

: Used with the Type 212A-class, entered service in 2008.{{Cite web |date=2020-11-23 |title=Torpedo DM2A4 – Umrüstung auf neuesten Technologiestand - bundeswehr-journal |url=https://www.bundeswehr-journal.de/2020/torpedo-dm2a4-umruestung-auf-neuesten-technologiestand/ |access-date=2024-12-21 |language=en}}

: Some of the equipment of 69 DM2A4 have been modernized and tested since 2020.{{Cite web |date=2024-12-20 |title=Bundeswehr: Zukunftsinvestitionen für 175 Millionen Euro |url=https://www.bmvg.de/de/aktuelles/bundeswehr-zukunftsinvestitionen-175-millionen-euro-4473484 |access-date=2024-12-21 |website=www.bmvg.de |language=de}}

; {{flag|Greece}} (82)

: 44 ordered in 2022 for the Okeanos-class (Type 209/1500 AIP) and the Papanikolis-class (Type 214). {{cite web |date=2022-03-31 |title=Υπογράφηκε τελικά η σύμβαση για την προμήθεια των νέων βαρέων τορπιλών για τα υποβρύχια |url=https://www.pronews.gr/amyna-asfaleia/naytiko/ypografike-telika-i-symvasi-gia-tin-promitheia-ton-neon-vareon-torpilon-gia-ta-ypovryxia/ |website=pronews.gr}}{{Cite web |last=admin |date=2022-04-14 |title=Hellenic Navy Buys 44 Atlas Elektronik DM2A4 SeaHake Heavyweight Torpedos - MilitaryLeak.COM |url=https://militaryleak.com/2022/04/14/hellenic-navy-buys-44-atlas-elektronik-dm2a4-seahake-heavyweight-torpedos/ |access-date=2024-12-21 |website=militaryleak.com |language=en-us}} 38 more ordered in 2025.{{cite web | title=Επιπλέον τορπίλες SeaHake Mod4 για τα υποβρύχια του Πολεμικού Ναυτικού | website=Πτήση | date=2025-05-20 | url=https://flight.com.gr/epipleon-torpiles-gia-ta-ipobrixia-tou-pn/ | ref={{sfnref|Πτήση|2025}} | access-date=2025-05-28}}

; {{flag|Israel}} (130)

: Used with the {{sclass|Dolphin|submarine|4}} and the AIP Dolphin 2 class.{{Cite web |last=Aslam |first=Umair |date=2022-01-29 |title=Israeli Submarine Fleet 2022 |url=https://defensetalks.com/israeli-submarine-fleet-2022/ |access-date=2024-12-21 |website=Global Defense Insight |language=en-US}}

:* 120 DM2A4 delivered in the period 2014-2023.Page 40 https://content.forensic-architecture.org/wp-content/uploads/2023/04/Forensis-Report-German-Arms-Exports-to-Israel-2003-2023.pdf

:* 10 DM2A4 delivered in 2024{{Cite web |title=German chancellor vows to continue arms deliveries to Israel |url=https://www.aa.com.tr/en/europe/german-chancellor-vows-to-continue-arms-deliveries-to-israel/3284468# |access-date=2024-12-21 |website=www.aa.com.tr}}

; {{flag|Pakistan}} (59)

: Ordered in .... for the Khalid-class (Agosta 90B-class) after its mid-life update.{{Cite web |date=July 2024 |title=Page 10 - Pakistan - Länderinformationen zu den Europäischen Kriterien für Waffenexporte |url=https://www.ruestungsexport.info/user/pages/04.laenderberichte/pakistan/2024_Pakistan.pdf |language=de}}{{Cite web |date=2023-01-26 |title=Agosta 90B Delivery to Pakistan {{!}} TURDEF |url=https://turdef.com/article/agosta-90b-delivery-to-pakistan |access-date=2024-12-21 |website=turdef.com |language=en}}{{cite book |title=The Military Balance 2021 |publisher=International Institute for Strategic Studies |page=291}}

; {{flag|Spain}} (40)

: Ordered in 2005 for the S-80-class.{{cite web |last=Infodefensa.com |date=11 December 2010 |title=El Gobierno aplaza un año la adquisición de torpedos por los retrasos que acumula el S-80 - Noticias Infodefensa España |url=http://www.infodefensa.com/es/2010/12/11/noticia-el-gobierno-aplaza-un-ano-la-adquisicion-de-torpedos-por-los-retrasos-que-acumula-el-s-30.html |publisher=}} New batteries purchased in 2022 for the torpedoes.{{Cite web |last=Defensa.com |date=2022-12-04 |title=Atlas Elektronik sostendrá los torpedos DM2A4 - Noticias Defensa España |url=https://www.defensa.com/espana/n-9-6-millones-para-sostenimiento-torpedos-s-80-cargo-atlas |access-date=2024-12-21 |website=Defensa.com |language=es}}{{Cite web |last= |first= |date=12 September 2022 |title=Navy seeks batteries for DM2A4 exercise torpedoes for S-80 submarines |url=https://www.infodefensa.com/texto-diario/mostrar/3885139/armada-busca-baterias-torpedos-ejercicio-dm2a4-submarinos-s-80 |access-date=2024-12-21 |website=Infodefensa - Noticias de defensa, industria, seguridad, armamento, ejércitos y tecnología de la defensa |language=es}}

; {{flag|Turkey}} (40)

: 40 ordered in 1999, delivered in 2004-05.{{Cite web |date=July 2024 |title=Türkei - Länderinformationen zu den Europäischen Kriterien für Waffenexporte (page 9) |url=https://www.ruestungsexport.info/user/pages/04.laenderberichte/tuerkei/2024_Tuerkei.pdf |language=de}}

: Turkey tested a torpedo in 2016 and sank the frigate TCG Zafer.{{Cite web |date=16 June 2016 |title=Türkiye tests DM2A4 torpedo by sinking its frigate TCG Zafer |url=https://www.infodefensa.com/texto-diario/mostrar/3080403/turquia-ensaya-torpedo-dm2a4-hundiendo-fragata-tcg-zafer}}

: 28 additional ordered in 2024.{{Cite web |last=Minute |first=Turkish |date=2024-12-12 |title=Germany approves largest arms exports to Turkey since 2006 |url=https://www.turkishminute.com/2024/12/12/germany-approve-largest-arm-export-turkey-since-2006/ |access-date=2024-12-21 |website=Turkish Minute |language=en-US}}

; {{flag|United Arab Emirates}} (19)

: DM2A4ER ordered in 2013, delivered in 2014.{{Cite web |date=July 2024 |title=Page 10 - Vereinigte Arabische Emirate - Länderinformationen zu den Europäischen Kriterien für Waffenexporte |url=https://www.ruestungsexport.info/user/pages/04.laenderberichte/vae/2024_Vereinigte%20Arabische%20Emirate.pdf |language=de}}

;{{flag|India}} (98)

: As part of the P-75I project, the Type 214-class and the S-80-class are competing for the selection. The 2DMA4 is a potential torpedo as it is qualified on the ships.{{Cite web |last=Philip |first=Snehesh Alex |date=2024-10-09 |title=Field evaluation trials or price discovery: Germany and Spain await key decision on India’s mega submarine project |url=https://theprint.in/defence/germany-spain-await-key-decision-as-navy-seeks-proven-tech-for-submarines-to-stay-underwater-longer/2302762/ |access-date=2024-12-21 |website=ThePrint |language=en-US}}

;{{flag|India}} (98)

: As part of the P-75 project that was won by the Scorpene-class, India was looking for a torpedo. The DM2A4 was one of the competitors but no information about its purchase was released.{{Cite web |title=Deutsche Rüstungsexporte: Arms Exports |url=http://ruestungsexport-info.de/no_cache/en/database-german-arms-trade/arms-exports.html?tx_ruestungsexport_ruestungsexporte%5Bpage%5D=3&tx_ruestungsexport_ruestungsexporte%5Bfilter%5D%5Bland%5D=&tx_ruestungsexport_ruestungsexporte%5Bfilter%5D%5Bcategory%5D=&tx_ruestungsexport_ruestungsexporte%5Bfilter%5D%5Bunternehmen%5D=&tx_ruestungsexport_ruestungsexporte%5Bfilter%5D%5Bsearchword%5D=&tx_ruestungsexport_ruestungsexporte%5Baction%5D=show&tx_ruestungsexport_ruestungsexporte%5Bcontroller%5D=Einzelgeschaeft&tx_ruestungsexport_ruestungsexporte%5Beinzelgeschaeft%5D=1150&cHash=49c23353622f7878141a9ad61c93f763 |access-date=2024-12-21 |website=ruestungsexport-info.de}}

• Mk 48
• Varunastra (torpedo)
• Black Shark
• Spearfish
• Tigerfish
• Baek Sang Eo (White Shark)
• Type 89
• Type 65
• Yu-6

• [http://www.atlas-elektronik.com Manufacturer's homepage]

{{Use dmy dates|date=June 2017}}

Category:Torpedoes of Germany

Category:Post–Cold War weapons of Germany

Category:Military equipment introduced in the 2000s