Technical Reports
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2022 Nautilus QAT Report
Cruise ID: NA136 Multibeam System: EM302 Dates: March 1-10, 2022 The 2022 EM302 Quality Assessment Tests (QATs) were conducted during the NA136 engineering shakedown cruise around the islands of Oʻahu, Molokaʻi, and Lānaʻifrom March 1stto the 10th. This year’s QAT was very important for two primary reasons:It was the first time to conduct a full…
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2021 Nautilus QAT Report
Cruise ID: NA126 Multibeam System: EM302 Dates: July 3-10, 2021 The 2021 EM302 Quality Assessment Tests (QATs) were conducted primarily during NA126, the engineering shakedown cruise, with some additional ship self-noise data collected during NA127. This years QAT was very important as in 2020 during NA118/NA119 it was discovered that there was a significant increase…
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2019 E/V Nautilus Quality Assessment Report
Cruise ID: NA105 Multibeam System: EM302 Dates: January 18-21, 2021 Attached Documents Report: Related Information
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2018 Nautilus Quality Assessment Report
Cruise ID: NA093 Multibeam System: EM302 Dates: May 30 – June 3, 2018 Attached Documents Report: Related Information
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2017 Nautilus Spring Quality Assessment Report
Cruise ID: NA079 Multibeam System: EM302 Dates: May 1-6, 2017 The E/V Nautilus undertook a multibeam echosounder quality assurance test from May 1 to May 5, 2017 during an engineering shakedown leg (NA079) in order to perform an assessment of the vessel’s Kongsberg EM302 multibeam echosounder. Data were collected near the Southern Channel Islands (Figure…
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2015 Nautilus Spring Quality Assessment Report
Cruise ID: NA055 Multibeam System: EM302 Dates: March 30 – April 5, 2015 Heading into the 2015 operating season, the EM302 and associated sensors aboard E/V Nautilus are working well compared to previous evaluations and to other EM302 systems examined recently. The patch test showed no pitch or yaw bias and only a very slight…
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2014 Nautilus Spring Quality Assessment Report
Cruise ID: NA040 Multibeam System: EM302 Dates: May 4-9, 2014 As it stands now, the EM302 and associated sensors are working well as compared to other EM302s evaluated recently. The patch test revealed very slight residual angular offsets, indicating a successful reinstallation of the MRU and no apparent change to any other component of the…