Cruise ID: SR2501
Multibeam System: EM124/EM712
Dates: January 25-28, 2025
1. R/V Sally Ride (SR) conducted routing quality assurance testing (QAT) for its EM124 and EM712 multibeam mapping systems at proven test sites off San Diego, CA, upon completion of its winter maintenance period
2. The Multibeam Advisory Committee (MAC) assisted with test planning, configuration review, data collection, and processing in collaboration with SIO and SR personnel
3. Notable changes since the 2024 EM124 and EM712 QAT / Seapath 380-R3 SAT include:
a. The Seapath MRU 5+ (used for secondary navigation data to both EM systems) was calibrated at the factory and reinstalled in its bracket during this maintenance period
b. SIS was updated to v5.14.0 ahead of the SAT for both EM systems, with associated Manager (v2025.0.1) in order to use the new #SSM datagram functionality (see later notes) changes to Sound Speed
4. During dockside sensor geometry review, a small error was found in the 2024 Westlake survey report and associated Seapath 380-R3 configuration for primary (stbd / aft) antenna height; a new value was provided by Westlake and applied prior to antenna calibrations on 2025-01-24 (see System Geometry Review for more info)
5. All Seapath antenna locations were adjusted to the L1 phase centers, following 2024 MAC report recommendations and pre-calibration discussions with Westlake; both Seapath antenna baselines were configured with the 2025-01-24 calibration results, which agreed with recent calibrations performed by SIO
Attached Documents
Report:
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