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Data collected by the survey launches are processed nightly for the duration of the project. Data processing involves transferring the acquired data to the ship’s network, correcting the data for tide and sound velocity errors, and rejecting errant soundings. This nightly processing is the first quality check of the acquired data. Night processing also determines how much data were collected so the crew can plan for the following day.
Acquired data are given closer scrutiny over the next few days by the survey sheet manager. This includes analyzing each dataset and looking for features such as wrecks or significant shoals. If necessary, more data will be acquired in the field to verify such features.
Acquired data is given closer scrutiny over the next few days by assigned personnel. This includes analyzing each dataset and looking for features such as wrecks or significant shoals. If necessary, more data will be acquired in the field to verify such features.
Once the data have been thoroughly analyzed, a comprehensive report is written that details the survey methods, differences in depths and features noted from the most updated charts, any errors in the acquired data, and much more. This report, along with a chart-size plot of the survey area with soundings and contours is submitted to the Field Operations Officer and Commanding Officer for review.
Once the Field Operations Officer and Commanding Officer have signed off on the report and the survey, all data and reports are submitted to the Pacific Hydrographic Branch. Physical scientists at the Pacific Hydrographic Branch review all acquired data and reports, make necessary changes, and send the data to update the nautical charts.
