Editing USS George H. W. Bush (section)

==Description==
''George H. W. Bush'' measures {{convert|1092|ft|m}} and displaces over 100,000 tons, making her one of the world's largest warships (though she is slightly shorter than {{USS|Enterprise|CVN-65|6}}). Her top speed exceeds 30&nbsp;knots; powered with two nuclear reactors, she can operate for more than 20&nbsp;years without refueling.

Several features differentiate CVN-77 from other ships in the ''Nimitz'' class.<ref name="Design Enhancements">{{cite web |url= http://www.nn.northropgrumman.com/bush/design_enhancements.html |title= Design Enhancements |access-date= 3 July 2009 |url-status=dead |archive-url= https://web.archive.org/web/20081223104414/http://www.nn.northropgrumman.com/bush/design_enhancements.html |archive-date= 23 December 2008}}</ref>

===Hull===
New features include a [[bulbous bow]] design that provides more buoyancy to the forward end of the ship and improves hull efficiency, curved [[flight deck]] edges to reduce radar signature, a new underwater hull coating system, deck modernized coverings to reduce ship weight by 100&nbsp;tons, low solar absorptive and anti-stain paint, a less cluttered [[hangar]] bay, and a new [[propeller]] design.<ref>{{cite web |url=http://www.irconnect.com/noc/press/pages/news_releases.html?d=165151 |title=Northrop Grumman Delivers Final Nimitz-Class Aircraft Carrier to the U.S. Navy |publisher=Globe Newswire |date=11 May 2009 |access-date=31 October 2011 |archive-url=https://web.archive.org/web/20090521131119/http://www.irconnect.com/noc/press/pages/news_releases.html?d=165151 |archive-date=21 May 2009 |url-status=live }}</ref>

===Island===
[[File:USS George H. W. Bush (CVN-77) island landing.jpg|thumb|Placement of the 700-ton island onto the ship's flight deck in 2006]]
''George H. W. Bush'' is the second carrier to have a modernized island, which includes a new radar tower (enclosed to reduce radar signature), navigation system upgrades, communication systems enhancements, and armored windows. The island is smaller and has been repositioned further aft to improve flight deck access and reduce signature and electronic self-interference.<ref name=GS1>{{cite web |first=John |last=Pike |url=http://www.globalsecurity.org/military/systems/ship/cvn-77.htm |title=CVN-77 – George H.W. Bush |publisher=Global Security |access-date=31 October 2011 |archive-url=https://web.archive.org/web/20111114042654/http://www.globalsecurity.org/military/systems/ship/cvn-77.htm |archive-date=14 November 2011 |url-status=live }}</ref>

===Air operations===
New air operations design features include an updated aviation fuel storage and distribution system, semi-automated refueling and servicing with new deck locations to provide faster, more efficient aircraft pit stops, requiring fewer people, modernized aircraft launch, and recovery equipment, and redesigned [[jet blast deflector]]s.<ref>{{cite web|url= 
https://www.naval-technology.com/projects/george-h-w-bush/|title=USS ''George H.W. Bush'' (CVN-77) Aircraft Carrier|publisher=naval-technology.com}}</ref>

===Environmental===
Environmental upgrades have also been designed into the ship, including a vacuum collection/marine sanitation device (VC/MSD), a new marine sewage system that uses sea water in lieu of fresh water for lower maintenance costs. Many older ships in the U.S.&nbsp;Navy utilize a gravity-driven collection holding and transfer (CHT) system to handle sewage waste. Newer U.S.&nbsp;Navy ships, including now CVN-77, collect sewage waste by vacuum, allowing for greater flexibility in piping installation, smaller pipe sizes overall and reducing water consumption. The collection tanks of ''George H. W. Bush'' were modified to accommodate both the VCHT (Vacuum CHT) equipment and the elements of a marine sanitization device to treat the waste prior to discharge. ''George H. W. Bush'' is the only aircraft carrier in the U.S. Navy to combine the two technologies.

This new VC/MSD driven waste management system has, however, not been without problems. Reports began surfacing immediately after delivery in May 2009 of issues with the ship's toilet system. As of November 2011, the entire system has gone down at least twice, rendering all 423 commodes in the ship's 130 heads inoperable, with many more incidents that have rendered either half of the ship, or sections of the ship, without operating sanitary facilities. In one ship-wide incident, a repair crew spent 35 non-stop hours attempting to return the system to working order. The system is said to suffer breakdowns when inappropriate materials such as feminine hygiene products are flushed down the toilets.<ref>{{cite news|url=http://www.navytimes.com/news/2011/11/navy-carrier-bush-suffers-widespread-toilet-outages-111411w/ |title=Carrier Bush suffers widespread toilet outages – Navy News &#124; News from Afghanistan & Iraq |newspaper=Navy Times |access-date=3 March 2012}}</ref> During a four-month maintenance period in the dock in 2012, anti-clog measures were installed in the ship's toilet disposal systems.<ref>Shapiro, Michael Welles, "Naval Shipyard Tackles Toilet Clogs on the Bush While Ship Is in For Repairs", ''[[Newport News Daily Press]]'', 29 September 2012</ref>

===Electronics and communications===
New electronics and communications technology,{{vague|date=July 2017}} space rearrangement, operational procedure changes, advanced sensor technologies and maintenance systems have been incorporated to reduce manning costs. A new zonal electrical distribution system will keep problems from affecting other parts of the ship. Automated material movement devices, semi-autonomous, gravity compensated weapons handling devices, damage control automation systems and components have also been installed. Medical and dental equipment have been upgraded, integrated display screens in Damage Control Central have been modernized to improve data integration and display, and equipment in general shops has been modernized to improve productivity.<ref name=GS1 />