Editing Virginia-class submarine (section)

=== Block I ===
[[File:USS Texas (SSN-775) christening ceremony.jpg|thumb|{{USS|Texas|SSN-775|6}} the second Block I boat at her christening ceremony.]]
Block I includes 4 boats and modular construction techniques were incorporated during construction.<ref>{{cite web |last=Patani |first=Arif |url=http://navylive.dodlive.mil/2012/09/24/next-generation-ohio-class/ |title=Next Generation Ohio-Class |website=Navy Live |publisher=US Navy |date=24 September 2012 |access-date=21 April 2013 |archive-url=https://web.archive.org/web/20130428124226/http://navylive.dodlive.mil/2012/09/24/next-generation-ohio-class/ |archive-date=28 April 2013 |url-status=live}}</ref> Earlier submarines (e.g., ''Los Angeles''-class SSNs) were built by assembling the pressure hull and then installing the equipment via cavities in the pressure hull. This required extensive construction activities within the narrow confines of the pressure hull which was time-consuming and dangerous. Modular construction was implemented in an effort to overcome these problems and make the construction process more efficient. Modular construction techniques incorporated during construction include constructing large segments of equipment outside the hull. These segments (dubbed rafts) are then inserted into a hull section (a large segment of the pressure hull). The integrated raft and hull section form a module which, when joined with other modules, forms a ''Virginia''-class submarine.<ref name=Holmander>{{cite news |first1=John D. |last1=Holmander |first2=Thomas |last2=Plante |title=The Four-Module Build Plan: The Second Decade of Virginia-class Construction Gets Better |journal=Undersea Warfare |url=http://www.public.navy.mil/subfor/underseawarfaremagazine/Issues/Archives/issue_43/build_plan.html |publisher=US Navy |date=Winter 2011 |issue=43 |access-date=4 June 2015 |archive-url=https://web.archive.org/web/20150924120328/http://www.public.navy.mil/subfor/underseawarfaremagazine/Issues/Archives/issue_43/build_plan.html |archive-date=24 September 2015 |url-status=dead}}</ref> Block I boats were built in 10 modules with each submarine requiring roughly 7 years (84 months) to build.<ref>{{cite conference |last1=Johnson |first1=David C. |first2=George M. |last2=Drakeley |first3=George M. |last3=Smith |title=Engineering the Solution: Virginia-Class Submarine Cost Reduction |conference=Engineering the Total Ship (ETS) 2008 |url=https://www.navalengineers.org/SiteCollectionDocuments/2008%20Proceedings%20Documents/ETS%202008/VA%20Class%20ASNE%20Paper%20FINAL.pdf |location=Falls Church, Virginia |publisher=American Society of Naval Engineers |date=23 September 2008 |access-date=21 April 2013 |url-status=dead |archive-url=https://web.archive.org/web/20140203084604/https://www.navalengineers.org/SiteCollectionDocuments/2008%20Proceedings%20Documents/ETS%202008/VA%20Class%20ASNE%20Paper%20FINAL.pdf |archive-date=3 February 2014}}</ref>
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