OPR-I369-TJ-18San Juan and Ponce and Vicinities, Puerto RicoSan Juan and Ponce and VicinitiesNOAA Ship THOMAS JEFFERSONH131401 See CRANES in the PRF for Coverage Requirements in the Investigation Requirements.Punta Miquillo to Punta FrailePuerto RicoUnited States50002018Briana Hillstrom, CDR/ NOAANavigable Area2018-06-052018-09-132018-10-12Multibeam Echo SounderMultibeam Echo Sounder BackscattermetersUTCAtlantic Hydrographic BranchNOAASurvey H13140 is located within the San Juan Harbor, in the vicinity of San Juan, Puerto Rico (Figure 1 and Figure 2). Survey data were acquired in accordance with the requirements set forth by the Project Instructions(PI) OPR-I369-TJ-18 and the Hydrographic Surveys Specifications and Deliverables (HSSD) dated April 2018.18.47575566.13045418.44136366.085716Survey layout for OPR-I369-TJ-18 (black lines), H13140 plotted over RNC 25669.file:///M:/OPRI369TJ18/Surveys/H13140/Office_Processing/Reports_office/SupportFiles/H13140%20survey%20coverage_a.jpgSurvey H13140 data overlayed on USACE LiDAR data.file:///M:/OPRI369TJ18/Surveys/H13140/Office_Processing/Reports_office/SupportFiles/H13140_over_USACE_LiDar.jpgSurvey coverage for H13140 was adjusted to account for available high quality U.S. Army Corps of Engineers (USACE) LiDAR data and field unit operational constraints. Only the portions of the assigned sheet limits within San Juan Harbor were surveyed. The near shore extent of survey was adjusted to be either 3.5 meters of depth or the extent of LiDAR coverage. Survey coverage adjustments were made with approval from the Project Manager (see Appendix II). Assigned features outside of the updated survey limit were investigated where feasible, except where otherwise noted in the Final Feature File.The economy for the 3.3 million Americans in the territory of Puerto Rico is largely ocean dependent. Approximately 7% of the jobs in Puerto Rico are directly involved in ocean related services accounting for over $920 million in wages. The island also imports 85% off its foodstuffs and virtually all of its energy products. Currently, only a small percentage of its coasts and critical harbors have been surveyed with modern bathymetric technology. In 2017 the island was damaged by two major hurricanes; in response, the NOAA Ship Thomas Jefferson conducted emergency sidescan and multibeam surveys of seven port facilities to locate storm related obstructions and subsequent dangers to navigation. A follow up to some of these ports and pilot areas, combined with a survey of the surrounding coastline, is necessary to verify that dangerous obstructions have been removed prior to updating nautical charts. The purpose of this survey was to a) revist an affected port to verify if dangerous obstruction had been removed and b) to provide critical updates to nautical charts in this region. The entire survey is adequate to supersede previous data.Varying waters in the survey areaComplete Coverage (Refer to HSSD Section 5.2.2.3)Varying waters in the survey areaObject Detection Coverage (Refer to HSSD Section 5.2.2.2)Varying waters in the survey areaSet Line Spacing (Refer to HSSD Section 5.2.2.4)Per the OPR-I396-TJ-18 Project Instructions (PI), there were multiple coverage requirements assigned for survey H13140 (Figure 3); however, the survey limits for Survey H13140 were adjusted based on pre-existing LIDAR coverage and the entirety of the adjusted survey limits are within assigned Object Detection Coverage areas. H13140 multibeam echo sounding (MBES) data meets the density requirements set forth in the HSSD 2018 for Object Detection Coverage. Survey H13140 products were produced at the object detection coverage specifications.Survey H13140 sheet limits as set forth in the PI, plotted over ENC US5PR32M. The areas outlined in orange indicate assigned Object Detection Coverage areas; the areas outlined in purple indicate set Space Line Coverage areas; and the area outlined in black indicates Complete Coverage areas.file:///M:/OPRI369TJ18/Surveys/H13140/Office_Processing/Reports_office/SupportFiles/H13140%20survey%20coverage_1.jpgGeneral Locality of H13140 MBES data plotted over RNC 25669 and RNC 25650.file:///M:/OPRI369TJ18/Surveys/H13140/Office_Processing/Reports_office/SupportFiles/H13140%20sheet%20limits.jpg29040325.7730000014.96302903023.11800000000348.8910000014.96304.28700003.042018-09-132018-10-012018-10-022018-10-032018-10-042018-10-052018-10-062018-10-072018-10-082018-10-092018-10-102018-10-112018-10-12Refer to the Data Acquisition and Processing Report (DAPR) for a complete description of data acquisition and processing systems, survey vessels, quality control procedures and data processing methods. Deviations from the DAPR are discussed in the following sections.29048.51.229038.51.2Hydrographic Survey Launch (HSL) 2903 experienced mechanical issues causing it to stay alongside for the majority of data acquisition of survey H13140.Kongsberg MaritimeEM 2040MBESApplanixPOS MV 320 v5Positioning SystemSea-Bird ScientificSBE 19plus V2Conductivity, Temperature, and Depth SensorTeledyne RESONSVP 70Sound Speed SensorTeledyne RESONSVP 71Sound Speed SensorVessel configurations, equiptment operations, and data aquisition and processing were consistent with specifications described in the DAPR.A variable resolution (VR) Combined Uncertainty and Bathymetry Estimator (CUBE) surface of mainscheme data and a VR CUBE surface of crossline data were differenced (Figure 5) - the resulting mean was 0.03m with a standard deviation of 0.05m (Figure 6). Visual inspection of the difference surface indicated no systematic issues.H13140 MBES crossline data, shown in color, overlaid on mainscheme data, shown in greyscale.file:///M:/OPRI369TJ18/Surveys/H13140/Office_Processing/Reports_office/SupportFiles/H13140%20XLs.jpgH13140 crossline/mainscheme comparisonfile:///M:/OPRI369TJ18/Surveys/H13140/Office_Processing/Reports_office/SupportFiles/H13140_surface_minus_Xlines_VR-H13140_Xlines__depth_delta.png00.12ERS via VDATUM290440.2290340.2The bathymetric surface's uncertainty layer is compliant with HSSD 2018 uncertainty standards. Over 99.5% of all nodes pass uncertainty standards (Figure 7).H13140 uncertanty standardsfile:///M:/OPRI369TJ18/Surveys/H13140/Office_Processing/Reports_office/SupportFiles/H13140_MB_VR_MLLW_Final.QAv5.tvu_qc.pngSonar system quality control checks were conducted as detailed in the quality control section of the DAPR.None ExistThere were no conditions or deficiencies that affected equipment operational effectiveness.Factors Affecting SoundingsSea state and weather conditions negatively impacted survey data in some areas near the entrance to the harbor. Data were rejected in areas where erroneous data could be distinguished from the sea floor (Figure 8); data were not rejected where erroneous data could not be distinguished from the sea floor. H13140 "Blowouts" with data rejected by filtering displayed in grey. file:///M:/OPRI369TJ18/Surveys/H13140/Office_Processing/Reports_office/SupportFiles/H13140_noise.jpgCasts were conducted at the start of acquisition each day and within four hours of each previous cast (Figure 9).Sound speed corrections were applied in CARIS using Nearest in Distanec Within Time (NIDWT) of four hours for the entire survey.SVP cast distribution.file:///M:/OPRI369TJ18/Surveys/H13140/Office_Processing/Reports_office/SupportFiles/H13140_SVP_casts.jpgAll equipment and survey methods were used as detailed in the DAPR.All data reduction procedures conform to those detailed in the DAPR.All sounding systems were calibrated as detailed in the DAPR.All equipment and survey methods were used as detailed in the DAPR. Raw MBES backscatter was logged as part of the .all file of the Kongsberg EM2040 systems. Backscatter was processed in QPS Fledermaus GeoCoder Toolbox (FMGT) software, and the exported geotiff's are included in the final processed data package (Figures 10-12).HSL 2903's 300kHz multibeam acoustic backscatter at 1m resolution.file:///M:/OPRI369TJ18/Surveys/H13140/Office_Processing/Reports_office/SupportFiles/H13140_TJ2903_Backscatter.jpgHSL 2904's 300kHz multibeam acoustic backscatter at 1m resolution.file:///M:/OPRI369TJ18/Surveys/H13140/Office_Processing/Reports_office/SupportFiles/H13140_TJ2904_Backscatter.jpgHSL 2903 &2904 combined 300kHz multibeam acoustic backscatter at 1m resolution. file:///M:/OPRI369TJ18/Surveys/H13140/Office_Processing/Reports_office/SupportFiles/H13140_Backscatter_GeoTiff_TJ2904_2903.jpgCarisHIPS/SIPS10.4QPSFledermaus Geocoder Toolbox7.8.6NOAA Profile V_5_8H13140_MB_VR_MLLW_FinalCARIS VR Surface (CUBE)Variable Resolution1.321.8NOAA_VRObject DetectionH13140_MBAB_1m_TJ2903_300kHz_1of4MB Backscatter Mosaic1N/AObject DetectionH13140_MBAB_1m_TJ2904_200kHz_2of4MB Backscatter Mosaic1N/AObject DetectionH13140_MBAB_1m_TJ2904_300kHz_3of4MB Backscatter Mosaic1N/AObject DetectionH13140_MBAB_1m_TJ2904_400kHz_4of4MB Backscatter Mosaic1N/AObject DetectionObject Detection Coverage requirements were met by Object Detection multibeam coverage as specified under section 5.2.2.2 of the HSSD 2018. All bathymetric grids for H13140 meet density requirements per the HSSD 2018 (Figure 13). Two holidays in waters deeper than the NALL (3.5m) and in areas that do not overlap with pre-existing LIDAR coverage exist within the main body of the final bathymetric grid.H13140 data density standardsfile:///M:/OPRI369TJ18/Surveys/H13140/Office_Processing/Reports_office/SupportFiles/H13140_MB_VR_MLLW_Final.QAv5.density.pngNo Horizontal and Vertical Control Report (HVCR) is required for this survey.Mean Lower Low WaterERS via VDATUMVDatum-WGS84_ACHARE_Polygon_ACHARE_Polygon_xyWGS84-MLLW_geoid12b.csarAll soundings submitted for H13140 are reduced to MLLW using VDatum techniques as outlined in the DAPR.North American Datum 1983Projected UTM 19Trimble-RTX service was used with an Applanix POS MVv5 GNSS-INS system to obtain highly accurate ellipsoidally referenced position data to meet ERS specifications for H13140 MBES data.DN278 Verical OffsetA vertical offset of unknown origin was observed between MBES data collected by HSL 2904 on DN 278 (2018-10-05) and MBES data collected on DN 279 (2018-10-16). Comparisons of the impacted data from DN 278 against overlapping mainscheme and crossline data show the offset ranges from 17cm to 7 cm shoaler than the likely sea floor. The offset is apparent in data collected between 1634 UTC (line 0566_20181005_163451) and 1647 UTC (line 0568_20181005_164351) on DN 278. The magnitude of the offset is well within the maximum allowable Total Vertical Uncertainty as specified in section 5.1.3 of the HSSD (2018). See Figures 14-16 below. All impacted MBES data are suitable for charting use. DN278 Vertical Offset Area Overview.file:///M:/OPRI369TJ18/Surveys/H13140/Office_Processing/Reports_office/SupportFiles/H13140_Verticle_Offset_Overview.jpgDN278 Vertical Offset Line Comparison.file:///M:/OPRI369TJ18/Surveys/H13140/Office_Processing/Reports_office/SupportFiles/H13140_Verticle_Offset2b.jpgDN278 Vertical Offset Line Comparison.file:///M:/OPRI369TJ18/Surveys/H13140/Office_Processing/Reports_office/SupportFiles/H13140_Verticle_Offset.jpgA chart comparison was conducted between survey H13140 soundings and previously charted ENC soundings using procedures outlined in the DAPR.US5PR32M10000282017-02-212017-02-21falseDepth contours were compared between H13140 and ENC US5PR32M at depths specified within the ENC. The hydrographer recommends contours for ENC US5PR32M be reviewed and updated. Recommended navigationally significant contour updates are shown in Figures 17-20.Field created contours within the Bahia de San Juan shown in orange, plotted over ENC US5PR32M.file:///M:/OPRI369TJ18/Surveys/H13140/Office_Processing/Reports_office/SupportFiles/H13140_Countour_2a.pngField created contours within the Bahia de San Juan shown in orange, plotted over ENC US5PR32M.file:///M:/OPRI369TJ18/Surveys/H13140/Office_Processing/Reports_office/SupportFiles/H13140_Countour_3a.pngField created contours within the Bahia de San Juan shown in orange, plotted over ENC US5PR32M.file:///M:/OPRI369TJ18/Surveys/H13140/Office_Processing/Reports_office/SupportFiles/H13140_Countour_4a.pngField created contours within the Bahia de San Juan shown in orange, plotted over ENC US5PR32M.file:///M:/OPRI369TJ18/Surveys/H13140/Office_Processing/Reports_office/SupportFiles/H13140_Countour_1a.pngNo Maritime Boundary Points were assigned for this survey. A total of 185 features were investigated. Four features were deemed appropriate for updating, 80 features were deemed appropriate for deletion, 101 features were deemed appropriate to be retained as charted. Reference the Final Feature File for further information. Thirty four uncharted features were investigated that were not considered dangerous to navigation. Reference the Final Feature File for further information. 18JUL01150533-S3DS_R2C1-058259621010_01_P001.TIFDigiGlobe2018-07-01There were a total of ten obstructions investigated that were deemed Dangers to Navigation (DtoNs). Reference the Final Feature File and relevant DtoN Report documents for further information.Three channel discrepancies were observed in Survey H13140 (Figure 21). The discrepancies are characterized as follows: (A) an observed depth of 10.3m in a channel with controlling depth of 11.3m; (B) an observed depth of 10.3m in a channel with controlling depth of 10.8m; and an observed depth of 12.2m in a channel with controlling depth of 13.1m. Channel discrepancies were reported in accordance with HSSD 2018. The hydrographer recommends the soundings for ENC US5PR32M be reviewed and updated.H13140 depth discrepancies within controlled depth area.file:///M:/OPRI369TJ18/Surveys/H13140/Office_Processing/Reports_office/SupportFiles/H13140%20channel%20discrepancies.pngBottom samples were assigned for this survey, but were not acquired due to operational time constraints.Shoreline was not assigned in the Hydrographic Survey Project Instructions or Statement of Work.Sixty four AtoNs were charted correctly and serving their intended purpose. Four charted AtoN features were not found. AtoN discrepancy reports were submitted for all missing and/or mis-charted features. One uncharted pedestrian bridge was investigated. Reference the Final Feature File for further information.One uncharted submarine pipeline is present within the survey area. This pipeline is exposed and was reported to BSEE in accordance with the HSSD 2018 (Figure 22). Reference the Final Feature File and DR Appendix II for further information.H13140 Exposed pipeline.file:///M:/OPRI369TJ18/Surveys/H13140/Office_Processing/Reports_office/SupportFiles/H13140_Pipeline.jpgNo platforms exist for this survey.A ferry route exists between Cantano and Old San Juan ferry terminals and is noted correctly on the chart.No abnormal seafloor and/or environmental conditions exist for this survey.No present or planned construction or dredging exist within the survey limits.No new surveys or further investigations are recommended for this area.No new insets are recommended for this area.As Chief of Party, field operations for this hydrographic survey were conducted under my direct supervision, with frequent personal checks of progress and adequacy. I have reviewed the attached survey data and reports.All field sheets, this Descriptive Report, and all accompanying records and data are approved. All records are forwarded for final review and processing to the Processing Branch.The survey data meets or exceeds requirements as set forth in the NOS Hydrographic Surveys Specifications and Deliverables, Field Procedures Manual, Letter Instructions, and all HSD Technical Directives. These data are adequate to supersede charted data in their common areas. This survey is complete and no additional work is required with the exception of deficiencies noted in the Descriptive Report.CDR Biana W. Hillstrom, NOAACommanding Officer2019-06-17LT Charles J. Wisotzkey, NOAAField Operations Officer2019-06-17Joshua HiteshewChief Hydrographic Survey Technician2019-06-17