2024 R/V Sikuliaq EM304 MKII/EM710 SAT

Cruise ID: SKQ202403S Multibeam System: EM304 MKII/EM710 Dates: February 2024 R/V Sikuliaq (SKQ) received several significant upgrades to its multibeam mapping systems during the 2023-24 winter shipyard period in Seward, Alaska Conditions in the shipyard were extreme and complicated all work related to these upgrades; although many components of the winter work package were curtailed by these conditions, the UAF and Kongsberg teams completed all major mapping priority projects: Complete replacement of the original EM302 with an EM304 MKII system (0.5° TX / 1.0° RX) Addition of one Seapath 380-R3 navigation systems with a primary MGC serving the ship and mapping systems; a secondary MGC also serve the ship and acts as a spare for the Seapath 380 / mapping system Comprehensive new survey of vessel and sensor offsets by Westlake Consultants Installation of new permanent benchmarks at strategic hull locations Planned replacement of the EM710 RX array was not

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

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.

2022 Kilo Moana EM122/EM710 QAT Report

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

2021 Kilo Moana QAT – EM122 and EM710

Cruise ID: KM2104B Multibeam System: EM122/EM710Dates: May 14-15, 2021 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 positioning / attitude system.The Multibeam Advisory Committee (MAC) was asked to assist with Quality Assurance Testing (QAT) of the ship’s multibeam echosounders ahead of the 2021 field season after factory service and re-installation of the IMU Attached Documents Report: Kilo_Moana_2021_EM122_EM710_QAT_report_v1p0Download Related Information Cruise Data at R2R

2020 Kilo Moana EM122/EM710 QAT

Cruise ID: KM2008B Multibeam System: EM122/EM710 Dates: July 28, 2020 The University of Hawaii’s UNOLS vessel R/V Kilo Moana(KM) is equipped with Kongsberg Maritime EM122 and EM710 multibeam echosounders and an ApplanixPOS MV-320 v5 Ocean Master positioning / attitude system The Multibeam Advisory Committee (MAC) was asked to assist with Quality Assurance Testing (QAT) of the ship’s multibeam echosoundersahead of the 2020 field season; due to widespread travel restrictions, MAC personnel provided remote support for line planning and data analysis from shore Attached Documents Report: KM_2020_EM122_EM710_QAT_report_v1p0Download Related Information Cruise Data at R2R

2020 Sikuliaq EM302/EM710 Calibration Report

Cruise ID: SKQ202008S Multibeam System: EM302/EM710 Dates: June 24, 2020 The University of Alaska’s UNOLS vessel R/V Sikuliaq(SKQ) is equipped with Kongsberg Maritime EM302 and EM710 multibeam echosounders and a Seapath320 positioning / attitude system The Multibeam Advisory Committee (MAC) was asked to assist with Quality Assurance Testing (QAT) of the ship’s EM302 and EM710 ahead of the 2020 field season; due to widespread travel restrictions, MAC personnel provided remote support for line planning and data analysis from shore Attached Documents Report: SKQ202008S_SIKULIAQ_EM302_EM710_calibration_report_20200625Download Related Information Cruise Data at R2R