Ship ID: R/V Sally Ride Multibeam System: EM712/EM124/Seapath 380-R3 Dates: April 3-5, 2024 R/V Sally Ride (SR) received an upgrade of its Seapath 330 navigation system to dual Seapath 380s The primary Seapath 380 employs a new Seapath MGC-R3 (“Seapath 380-R3”) and the secondary Seapath 380 uses the pre-existing MRU 5+ (“Seapath 380-5+”); both systems are logged by the EM124 and EM712 While no changes were made to the MRU 5+ installation, the original Seapath antenna locations were modified for a longer baseline and a second antenna pair was added; all Seapath antennas are NovAtel GNSS-850 units A new survey was conducted by Westlake Consultants to determine the installation offsets of the new MGC-R3 and new antenna locations using the existing reference frame (established by IMTEC during the 2021 SBP29 installation and EM124 topside upgrade) The Sally Ride conducted routine quality assurance testing (QAT) between April 3-5, 2023, focusing on: