Actually you are pissed that i will not follow your dyke lead as I determine the info flow
Design of NSSN Virginia-Class submarines
The engineering teams and design and build teams at Electric Boat in partnership with the Naval Sea Systems Command, NAVSEA, of the US Navy used extensive CAD / CAE simulation systems to optimise the design of the
submarine.
The hull is 377ft long with a beam of 34ft and the displacement of 7,300t dived, which is smaller than the more expensive Seawolf attack submarine with a displacement of 9,137t dived.
The hull structure contains structurally integrated enclosures, which accommodate standard 19in and 24in width equipment for ease of installation, repair and upgrade of the submarine’s systems.
The submarine is fitted with modular isolated deck structures, for example, the submarine’s command centre will be installed as one single unit, resting on cushioned mounting points. The submarine’s control suite is equipped with computer touch screens.
The submarine’s steering and diving are controlled via a four-button, two-axis joystick.
The noise level of Virginia is equal to that of the US Navy Seawolf, SSN 21, with a lower acoustic signature than the Russian Improved Akula-Class and fourth-generation attack submarines. To achieve the low acoustic signature, Virginia incorporates newly designed anechoic coatings, isolated deck structures and a new design of propulsor.
Goodrich is supplying high-frequency sail array acoustic windows and composite sonar domes.
Command system
The command and control systems module (CCSM) was developed by a team led by Lockheed Martin Naval Electronics & Surveillance Systems – Undersea Systems (NE&SS-US) of Manassas, Virginia, US. It will integrate all of the vessel’s systems – sensors, countermeasure technology, navigation and weapon control and will be based on open system architecture (OSA) with Q-70 colour common display consoles.
Weapon control is provided by Raytheon with a derivative of the CCS mk2 combat system, the AN/BYG-1 combat control system, which was fitted to the Australian Collins-Class submarines.
Virginia has two mast-mounted Raytheon submarine high data rate (sub HDR) multiband satellite communications systems that enable simultaneous communication at a super-high frequency (SHF) and extremely high frequency (EHF).
Weapon systems
The Virginia-Class attack submarine is equipped with 12 vertical
missile launch tubes and four 533mm torpedo tubes. The vertical launching system has the capacity to launch 16 Tomahawk submarine-launched cruise missiles (SLCM) in a single salvo. There is a capacity for up to 26 mk48 ADCAP mod 6 heavyweight torpedoes and sub harpoon anti-ship missiles to be fired from the 21in torpedo tubes. Mk60 CAPTOR mines may also be fitted.
An integral lock-out / lock-in chamber is incorporated into the hull for special operations. The chamber can host a mini-submarine such as Northrop Grumman’s Oceanic and Naval Systems advanced SEAL delivery system (ASDS) to deliver special warfare forces such as navy sea air land (SEAL) teams or marine reconnaissance units for counter-terrorism or localised conflict operations.
Countermeasures
Virginia is fitted with the AN/WLY-1 acoustic countermeasures system developed by Northrop Grumman, which provides range and bearing data, along with the mast-mounted AN/BLQ-10 electronic support measures (ESM) system from Lockheed Martin Integrated Systems.
AN/BLQ-10 provides full-spectrum radar processing, automatic threat warning and situation assessment.
Sensors
The Virginia-Class sonar suite includes a bow-mounted active and passive array, wide aperture passive array on the flank, high-frequency active arrays on keel and fin, TB 16 towed array and the Lockheed Martin TB-29A thin line towed array with the AN/BQQ-10(V4) sonar processing system. A Sperry Marine AN/BPS-16(V)4 navigation radar, operating at I-band, is fitted.
The submarines have two Kollmorgen AN/BVS-1 photonic masts, rather than optical periscopes. Sensors mounted on the non-hull-penetrating photonic mast include LLTV (low-light TV), thermal imager and laser rangefinder. The mast is the Universal Modular Mast developed by Kollmorgen and its Italian subsidiary, Calzoni.
The Boeing LMRS long-term mine reconnaissance system will be deployed on the Virginia Class. LMRS includes two 6m autonomous unmanned underwater vehicles and 18m robotic recovery arm and support electronics.
Northrop Grumman Electronic Systems supplies the lightweight, wide-aperture array (LWWAA) system based on fibre-optic arrays, instead of traditional ceramic hydrophone sensors.
LWWAA is a passive ASW sonar system, which consists of three large array panels mounted on either side of the submarine’s hull. Lockheed Martin provided acoustic rapid commercial-off-the-shelf insertion (A-RCI) hardware for the sonar system upgrade. The $25.1m contract was awarded in August 2009 and deliveries were completed in 2012.
In January 2011, an $84m contract was awarded to Lockheed Martin for submarine sonar upgrades.
Northrop Grumman designed and delivered a new hull-mounted acoustic Advanced Flank Array (AFA) for the Virginia-Class submarine, investing more than $3m. The system underwent testing in November 2017 and demonstrated its capability to address next-generation flank array requirements.
Propulsion
The main propulsion units are the GE pressure water reactor S9G designed to last as long the submarine, two turbine engines with one shaft and a United Defense pump jet propulsor, providing 29.84MW. The speed is over 25k dived.