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Her keel was laid in 1943 as PC-1425, before being reclassified three months later as a "patrol craft sweeper" (PCS). After the war, the ship served as a test platform for the development of naval radios, being the first ship to demonstrate the use of an automatically aligning UHF directional antenna .
An optical answer sheet or bubble sheet is a special type of form used in multiple choice question examinations. OMR is used to detect answers. The Scantron Corporation creates many optical answer sheets, although certain uses require their own customized system. [citation needed] Optical answer sheets usually have a set of blank ovals or boxes ...
A typical shipboard ARPA/radar system. A marine radar with automatic radar plotting aid (ARPA) capability can create tracks using radar contacts. [1] [2] The system can calculate the tracked object's course, speed and closest point of approach [3] (CPA), thereby knowing if there is a danger of collision with the other ship or landmass.
Military computers will typically also be constructed of more robust materials with more internal structure, more cooling fans, a more robust power supply, and so forth. Intended Environment – An office or consumer computer is intended for use in a very controlled shirt-sleeve environment with moderate temperatures and humidity and minimal ...
The United States planned to acquire 48 Mark VI boats. Only 12 were ordered in 2015 and delivered by 2017. This was due to the crafts not being extensively used, suffering from reliability problems, and considered too expensive to maintain, they held off on ordering any more until 2023. [7] As of 2025 the US currently has 38 Mark VI patrol boats.
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Astronauts manually flew Project Gemini with control sticks, but computers flew most of Project Apollo except briefly during lunar landings. [6] Each Moon flight carried two AGCs, one each in the command module and the Apollo Lunar Module, with the exception of Apollo 7 which was an Earth orbit mission and Apollo 8 which did not need a lunar module for its lunar orbit mission.
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