Navigable Area2021W00616LouisianaCalcasieu PassTurning Basin250002021-10-212021-10-21ESD-PHB-22Venture Global LNGKen KusanoTeledyne Odom HydrographicOTSBB200/24-4/20SBESPacific Hydrographic BranchmetersAny revisions to the Descriptive Report (DR) applied during office processing are shown in red italic text. The DR is maintained as a field unit product, therefore all information and recommendations within this report are considered preliminary unless otherwise noted. The final disposition of survey data is represented in the NOAA nautical chart products. All pertinent records for this survey are archived at the National Centers for Environmental Information (NCEI) and can be retrieved via https://www.ncei.noaa.gov/. Products created during office processing were generated in NAD83 UTM 15N, MLLW. All references to other horizontal or vertical datums in this report are applicable to the processed hydrographic data provided by the field unit.North American Datum 1983Mean Lower Low WaterVDatumProjected UTM 152022-02-102022-02-07Pacific Hydrographic BranchKen KusanoVice President, Marine EngineeringVenture Global LNGPHBThe survey was a post-dredge, as-built survey of a turning basin adjacent to the Calcasieu River Ship Channel.Survey products were generated by the hydrographic branch.VDatum was used to horizontally transform the source data from U.S. State Plane Louisiana South (U.S. survey feet) to NAD83 UTM 15N, and to vertically transform the depths from NAVD88 to MLLW.Data were acquired using a Teledyne Odom Hydrographic OTSBB200/24-4/20 single beam echosounder integrated with RTK. Processing information is not included in this report.One anti-DTON was submitted to NOAA Marine Chart Division to remove a disproved soundings from the ENC.Venture Global LNGDue to dredging, the survey data shows depth differences within the turning basin when compared to a survey acquired one year prior.The survey is partially adequate to supersede previous data.It is recommended to update the charted bathymetry using the survey data. Charted features were not addressed by this survey and should be retained as charted.