page_title: GPS Block III
hierarchical_section_title: GPS Block III
caption_attribution_description: English: Artist's impression of a GPS Block IIIA satellite in orbit
context_page_description: GPS Block III consists of the first ten GPS III satellites, which will be used to keep the Navstar Global Positioning System operational. Lockheed Martin designed, developed and manufactured the GPS III Non-Flight Satellite Testbed and all ten Block III satellites. The first satellite in the series was launched in December 2018. The tenth and final GPS Block III launch is projected in Q2 2023.
context_section_description: GPS Block III (previously Block IIIA) consists of the first ten GPS III satellites, which will be used to keep the Navstar Global Positioning System operational. Lockheed Martin designed, developed and manufactured the GPS III Non-Flight Satellite Testbed (GNST) and all ten Block III satellites.   The first satellite in the series was launched in December 2018. The tenth and final GPS Block III launch is projected in Q2 2023.
caption: Artist's impression of a GPS Block III satellite in orbit
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