2014 Sikuliaq Acoustic Test Report

Vessel: R/V Sikuliaq Multibeam System: EM302/EM710 Dates: September 12-18, 2014 Gates Acoustic Services was tasked by University of Alaska, Fairbanks, to investigate and quantify acoustic issues associated with operation of the R/V SIKULIAQ.

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2012 Kilo Moana Acoustic Test Report

Vessel: R/V Kilo Moana Multibeam System: EM122 Dates: 2012 KILO MOANA’s acoustic signature was higher than previous acoustical data due to electronic noise interference.

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2012 Melville Acoustic Test Report

Vessel: R/V Melville Multibeam System: EM122 Dates: January 2012 R/V MELVILLE acoustic signature was successfully measured during this acoustic test.

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2011 Atlantis Acoustic Test Report

Vessel ID: R/V Atlantis Multibeam System: EM122 Dates: June 2011 The R/V Atlantis replaced its EM122 multibeam echosounder with an EM124 upgrade during the 2020-21 The acoustic signature of R/V ATLANTIS was successfully measured during this acoustic test.

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2012 Langseth Quality Assurance Report

Cruise ID: MGL1214 Multibeam System: EM122 Dates: August 01, 2012 Patch Test ResultsLatency Test– No change neededRoll Test– Applied additional offset of -0.065– Resulting Roll Offset -0.575Pitch Test– No change neededHeading Test– Applied offset of -0.2– Resulting Heading&Offset:&L0.2& Attached Documents Report: QAT_MGL1214-PatchTest_0812Download Pre-Cruise Analysis: analysis_langsethDownload Related Information Cruise Data at R2R

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2010 Kilo Moana Acoustic Test Report

Vessel: R/V Kilo Moana Multibeam System: EM122Dates: September 2010 KILO MOANA’s acoustic signature was comparable to previous acoustical data with one noted exception.

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2011 Marcus G. Langseth Acoustic Test Report

Cruise ID: R/V Marcus G.

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Tech Reports

Ship Sonar System ANT QAT SAT 2025 2025 R/V Sikuliaq EM304 MKII / EM710 QAT 2025, EM304 MKII, EM710, MAC, QAT, Sikuliaq 2025 R/V Sally Ride EM124 / EM712 QAT 2025, EM124, EM712, MAC, QAT, Sally Ride 2025 R/V Roger Revelle EM712 /EM124 QAT 2025, EM124, EM712, MAC, QAT, Roger Revelle 2024 2024 R/V Sikuliaq EM304 MKII/EM710 SAT 2024, EM304 MKII, EM710, MAC, QAT, Sikuliaq 2024 R/V Sally Ride EM712/EM124 QAT & Seapath 380-R3 SAT 2024, EM124, EM712, MAC, QAT, Sally Ride, SAT, Seapath 380-R3 2024 R/V Revelle EM712/EM124 QAT 2024, EM124, EM712, MAC, QAT, Roger Revelle 2024 R/V Rachel Carson EM2040 SAT 2024, EM2040, MAC, Rachel Carson, SAT 2024 R/V Healy EM122 QAT 2024, EM122, Healy, MAC, QAT 2024 R/V David Packard EM304 MKII SAT 2024, David Packard, EM304 MKII, Non-MAC, SAT 2024 R/V Armstrong EM712/EM124 SAT 2024, EM124, EM712, MAC, Neil Armstrong, SAT 2023 2023 R/V Thompson EM302

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2021 R/V Thomas G. Thompson EM302 QAT

Cruise ID: TN386 Multibeam System: EM302 Dates: January, 2021 The R/V Thomas G.

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2020 Roger Revelle SAT EM712 and EM124

Cruise ID: RR2002 Multibeam System: EM712/EM124 Dates: October 18-25, 2020 The R/V Roger Revelle (RR) underwent a major mid-life refit / repower during 2018-2020, receiving newengines and a new gondola to reduce bubble sweep along the acoustic transducers.

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