the purchase of three additional ThyssenKrupp built submarines. The former Defense Minister Moshe Ya’alon, who opposed the acquisition during his tenure, called for the Attorney General Avichai Mandelblit to investigate the negotiations which included Prime Minister Benjamin Netanyahu's personal attorney David Shimron for work while on retainer to the offices of Miki Ganor which represents ThyssenKrupp in Israel. As of 23 November 2016 A.G. Mandelblit has decided to ask the state prosecutor to move forward with an investigation into the case. In July 2021 with the newly formed government in power and the Netenyahu lead government out of power MK Gantz the new Defense Minister as well as MK Sa'ar began an official process into initiating a state investigation into the case 3000 submarine procurement case saying "An official inquiry committee that will investigate all aspects of the affair is the need of the hour". However, the government's submarine procurement investigation has been delayed as the ThyssenKrupp negotiations for the purchase of new submarines with additional capabilities is ongoing and likely to cost €2.4B. In October 2017, Israel and Germany confirmed that they finalised a memorandum of understanding covering the Israeli Navy's purchase of three more Dolphin-class submarines to be delivered starting in 2027. The deal was formally signed in January 2022 with the then envisaged delivery of the first boat occurring within nine years. These boats will replace the first three of the class which by then will be about 30 years old. Germany will provide industrial subsidies to German companies building and outfitting the submarines covering a third of purchase costs. Armament and systems Each submarine is fitted with 6 × torpedo tubes, and 4 × torpedo tubes. The very large 650 mm tubes can be used for laying mines, larger submarine-launched cruise missiles, or swimmer delivery vehicles, and with liners the tubes could be used for standard torpedoes and submarine-launched missiles. The boats were first armed with Atlas Elektronik DM2A3 torpedoes using wire-guided active homing to deliver a warhead at a maximum speed of to a target over away, in passive homing mode a speed of and a range up to is possible. Israel has also procured the more advanced DM2A4 torpedo, successor to their DM2A3s, which are electrically propelled, equipped with fiber optic communications and has countermeasure resistant signals processing and mission logic. A wet and dry compartment is installed for deploying underwater special operations teams.