2017 Kilo Moana Quality Assessment Visit

Multibeam System: 

During the late fall of 2016 and spring of 2017 the University of Hawaii’s Ocean Technology Group (OTG) submitted bathymetric data, screen shots (Figure 1), and built in self-test (BIST) data to the Multibeam Advisory Committee (MAC) and to Gates Acoustic documenting pervasive noise which was affecting the R/V Kilo Moana’s Kongsberg EM122 multibeam echosounder system’s (MBES) ability to collect high-quality bathymetric data. Initially, it was thought that the source of the noise was likely from either acoustic noise derived from the ship (e.g., propulsion system noise) or from the shipboard electrical power conditioning systems, which had undergone changes during a maintenance yard period prior to the degradation of EM122 data quality.

KM1711_MAC_Final_V1pt1_Final.pdf4.05 MB