Cruise ID: HLY23TAMultibeam System: EM122Dates: May 23 – July 13, 2023 The USCGC Healy (HLY) is equipped with a Kongsberg Maritime EM122 multibeam echosounder (1° TX x 2° RX) with Seapath 330+ (primary) and Applanix Oceanmaster POS MV (secondary) navigation systems The original EM122 RX array modules on USCGC Healy were found to be failing during recent impedance testing; these modules were replaced with lightly used units (donated from a NAVO vessel undergoing an EM124 upgrade) during the 2022-23 maintenance period at Mare Island Dry Dock in Vallejo, CA The Multibeam Advisory Committee (MAC) was asked to assist with Quality Assurance Testing (QAT) of the ship’s multibeam echosounder and Sea Acceptance Testing (SAT) of the ‘new’ RX array ahead of the 2023 field season; due to scheduling constraints, MAC personnel provided remote support for line planning and data analysis Attached Documents Report: HEALY_2023_EM122_QAT_report_v1p0Download Related Information Vessel Data at R2R
Vessel ID: R/V Kilo Moana Multibeam System: EM122/EM710 Dates: March 21-22, 2023 KM 2023 QAT Executive Summary The University of Hawaii’s UNOLS vessel R/V Kilo Moana (KM) is equipped with Kongsberg Maritime EM122 and EM710 multibeam echosounders and an Applanix POS MV-320 V5 Ocean Master navigation system R/V Kilo Moana conducted pre-season Quality Assurance Testing (QAT) for the EM122 and EM710 multibeam mapping systems during gear trials over March 21-22, 2023 Because no hardware changes were made to the mapping systems since the 2022 post-shipyard QAT, the limited time available for the 2023 QAT was used to conduct deepwater accuracy testing and noise testing to build on the 2022 QAT (i.e., no new patch tests) Pre- and post-shipyard noise testing conducted in March and May 2022 had indicated elevated but stable noise levels the previous field season (see 2022 report) RX noise testing in October 2022 revealed significant increases in
Cruise ID: SR2307Multibeam System: EM124/EM712Dates: April 4-5, 2023 Executive Summary The R/V Sally Ride (SR) conducted routine quality assurance testing (QAT) on April 4-5, 2023, following the ship’s winter maintenance period The primary QAT activities included mapping system configuration review and calibration (‘patch testing’) at two sites near San Diego, CA:a.
Cruise ID: SKQ202306T Multibeam System: EM302/EM710 Dates: April 11, 2023 The University of Alaska’s UNOLS vessel R/V Sikuliaq (SKQ) is equipped with Kongsberg Maritime EM302 andEM710 multibeam echosounders and a Seapath 320 positioning / attitude system Following a routine maintenance visit from Kongsberg to SKQ in January, the Multibeam Advisory Committee(MAC) was asked to assist with Quality Assurance Testing (QAT) of the ship’s EM302 and EM710 ahead of the2023 field season; MAC personnel provided remote support for line planning and data analysis from shore MAC communication with SKQ personnel (Ethan Roth) commenced in winter 2022-23 with planning forcalibrations (‘patch tests’) for both systems at two proven calibration sites off Washington: EM302 at a site used by R/V Thomas G.
Cruise ID: HLY22TA Multibeam System: EM122 Dates: May 21-23, 2022 USCGC Healy underwent pre-season Quality Assurance Testing to evaluate performance of the multibeam mapping system using existing calibration and accuracy test sites off Washington.
Vessel ID: R/V Kilo MoanaMultibeam System: EM122/EM710Dates: May 22, 2022 R/V Kilo Moana conducted pre-season Quality Assurance Testing for the EM122 and EM710 multibeam mapping systems, following a series of POS MV troubleshooting steps and a dry dock maintenance period Pre- and post-shipyard noise testing indicated stable/acceptable noise levels and no damage in the shipyard A multibeam sensor geometry review and POS MV GAMS antenna calibration proceeded normally prior to geometric calibrations (‘patch tests’) at proven sites off Oahu (used previously by multiple vessels) Calibration adjustments were reasonably small and applied after data collection Swath coverage was assessed for the EM122 using transit data, indicating trends similar to previous years Swath artifacts were noted for each system, which may be addressed by software/firmware updates and some runtime setting adjustments; the MAC is available to review additional data to try to identify the root causes Following the 2022 QAT, the MAC
Cruise ID: SKQ202203S Multibeam System: EM302/EM710 Dates: April 11, 2021 • The University of Alaska’s UNOLS vessel R/V Sikuliaq (SKQ) is equipped with Kongsberg Maritime EM302 and EM710 multibeam echosounders and a Seapath 320 positioning / attitude system.
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.
Cruise ID: SKQ202102S Multibeam System: EM302/EM710 Dates: April 11, 2021 The University of Alaska’s UNOLS vessel R/V Sikuliaq (SKQ) is equipped with Kongsberg Maritime EM302 and EM710 multibeam echosounders and a Seapath 320 positioning / attitude system The Multibeam Advisory Committee (MAC) was asked to assist with Quality Assurance Testing.