2023

There are 7 posts tagged 2023 (this is page 1 of 1).

2023 R/V Roger Revelle EM124/EM712 QAT

Cruise ID: RR2301 Multibeam System: EM124/EM712 Dates: February 4-19, 2023 R/V Roger Revelle (RR) underwent routine calibrations of the ship’s multibeam echosounders during an extended transit/cruise between Punta Arenas, Chile, and Cape Town, South Africa in February 2023; the MAC provided remote support for planning and data analysis leading up to and throughout the calibration Planning followed the standard MAC SAT/QAT checklist, focusing on calibrations at suitable sites within reasonable deviations along the transit route; these were completed in two phases with initial EM124 testing near Puntarenas, followed by EM124 re-calibration and EM712 calibration at suitable sites off Cape Town The initial EM124 calibration was completed with a TX array pitch error inadvertently held over from the 2020 EM124 and EM712 SAT; this was corrected for the second calibration, resulting in typically small adjustments During the approach to the second calibration area off Cape Town, an EM712 configuration error was
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2023 R/V Healy EM122 QAT Report

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
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2023 R/V Kilo Moana EM122/EM710 QAT Report

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
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2023 R/V Sikuliaq EM302/EM710 QAT Report

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.
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