OPR-I369-TJ-18San Juan and Ponce and Vicinities, Puerto RicoSan Juan and Ponce and VicinitiesNOAA Ship THOMAS JEFFERSONH131478 See CRANES in the PRF for Coverage Requirements in the Investigation Requirements.Bahia de JobosPuerto RicoUnited States50002018Christiaan van Westendorp, CAPT/NOAANavigable Area2018-06-182018-09-082018-09-20Multibeam Echo SounderMultibeam Echo Sounder BackscattermetersUTCAtlantic Hydrographic BranchAny 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 19N and MLLW. All references to other horizontal or vertical datums in this report are applicable to the processed hydrographic data provided by the field unit.NOAASurvey H13147 is located in and around the Bahia de Jobos and near Las Mareas on the southern coast of Puerto Rico (Figure 1). 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. 17.958572222266.303911111117.918386111166.1592916667Survey layout for H13147, plotted over RNC 25677_2 and 25687_1. Orange outline represents the survey limits set forth by the Project Instructions.SupportFiles\H13147_Sheet_Limits.pngOnly high priority areas of the assigned sheet area were surveyed. The areas surveyed reflect the priorities of the local pilot association and areas most used by local marine traffic. The near shore extent of survey was adjusted based on available US Army Corps of Engineers (USACE) Light Detection and Ranging (LiDAR) data. MBES data from H13147 junctions with available USACE LiDAR coverage (Figure 2). The decision to limit survey to locally prioritized areas in conjunction with USACE LiDAR coverage was approved by the Project Manager.Survey H13147 data overlayed on USACE LiDAR data.SupportFiles\Lidar_surface.jpgThe 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% of 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, high-resolution sounding or hydrographic LiDAR devices. 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 damage to the channels. 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 entire survey is adequate to supersede previous data.Varying waters in the survey areaObject Detection Coverage (Refer to HSSD Section 5.2.2.2)Varying waters in the survey areaComplete Coverage (Refer to HSSD Section 5.2.2.3)Per the OPR-I396-TJ-18 Project Instructions (PI), there are two coverage requirements assigned for survey H13147 (Figure 3). H13147 multibeam echo sounding (MBES) data meets the density requirements set forth in the HSSD (2018) for Object Detection coverage (see section B.5.2 of this descriptive report for H13147 data density statistics). H13147 products were produced at the Object Detection coverage specifications.Survey H13147 sheet limits as set forth in the PI, plotted over RNC 25677_1. The areas outlined in orange indicate Object Detection Coverage, whereas the area outlined in purple indicate Complete Coverage.SupportFiles\Survey_coverage requirements.jpg29030204.88000001.68029040181.360000018.5900386.240000020.2705.25100003.642018-09-082018-09-092018-09-102018-09-112018-09-182018-09-192018-09-20Refer 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.29038.51.229048.51.2ApplanixPOS MV 320 v5Positioning and Attitude SystemSea-Bird ScientificSBE 19plus V2Conductivity, Temperature, and Depth SensorTeledyne RESONSVP 70Sound Speed SensorTeledyne RESONSVP 71Sound Speed SensorKongsberg MaritimeEM 2040MBESCrossline comparisons were conducted in accordance with procedures outlined in the DAPR. Two final bathymetric surfaces were submitted for this survey (one surface for Bahia de Jobos and one for the harbor at Las Mareas), and comparison routines were conducted on both surfaces. The crossline comparison for the Bahia de Jobos portion of the survey (H13147_MB_50cm_MLLW_Final_1of2) yielded a mean difference of 0.04m and a standard deviation of 0.06m (Figure 4). The crossline comparison for the Las Mareas portion of the survey (H13147_MB_50cm_MLLW_Final_2of2) yielded a mean difference of 0.01m and a standard deviation of 0.06m (Figure 5).H13147 crossline/mainscheme comparison for surface grid H13147_MB_50cm_MLLW_Final_1of2.SupportFiles\H13147_MB_50cm_MLLW_1of2_xl-H13147_MB_50cm_MLLW_1of2_ms_depth_delta.pngH13147 crossline/mainscheme comparison for surface grid H13147_MB_50cm_MLLW_Final_2of2.SupportFiles\H13147_MB_50cm_MLLW_2of2_xl-H13147_MB_50cm_MLLW_2of2_ms_depth_delta.pngERS via VDATUM0.00.12290340.2290440.2The bathymetric surface's uncertainty layer is compliant with HSSD 2018 uncertainty standards. Over 99.5% of all nodes pass uncertainty standards (Figures 6-7).H13147 uncertainty statistics for surface grid H13147_MB_50cm_MLLW_Final_1of2.SupportFiles\H13147_MB_50cm_MLLW_Final_1of2.QAv5.tvu_qc.pngH13147 uncertainty statistics for surface grid H13147_MB_50cm_MLLW_Final_2of2.SupportFiles\H13147_MB_50cm_MLLW_Final_2of2.QAv5.tvu_qc.pngNo hydrographic surveys junctioned with H13147. See section for B.5.3 for a discussion of the LiDAR data used to adjust H13147 survey limits. Sonar 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.None ExistThere were no other factors that affected corrections to soundings.Casts were conducted at the start of acquisition each day and within four hours of each previous cast.Cast locations were selected to sample water most representative of local environmental survey conditions (Figure 8). Several casts were taken outside of MBES surface coverage. No sound speed cast were taken greater than 170 meters from the edge of survey coverage. All casts taken outside of MBES surface coverage represented local water column conditions.SVP cast distribution.SupportFiles\H13147_SVP_Locations.pngH13147 was surveyed in accordance with Object Detection standards using Object Detection MBES coverage (HSSD 2018, Section 5.2.2.2, Option A). HSLs 2903 and 2904 with Kongsberg EM2040 MBESs were used to achieve coverage. All data reduction procedures conform to those detailed in the DAPR.All sounding systems were calibrated 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 9-11).HSL 2903's 300kHz multibeam acoustic backscatter at 1m resolution.SupportFiles\2903_backscatter.jpgHSL 2904's 300kHz multibeam acoustic backscatter at 1m resolution.SupportFiles\2904_backscatter.jpgCombined multibeam acoustic backscatter at 1m resolution.SupportFiles\2903_04_merge_backscatter.jpgNOAA Profile V_5_8H13147_MB_50cm_MLLW_1of2.CARIS Raster Surface (CUBE)0.51.241417.9732NOAA_0.5mObject DetectionH13147_MB_50cm_MLLW_2of2.CARIS Raster Surface (CUBE)0.51.123419.7870NOAA_0.5mObject DetectionH13147_MB_50cm_MLLW_Final_1of2CARIS Raster Surface (CUBE)0.50.878017.9732NOAA_0.5mObject DetectionH13147_MB_50cm_MLLW_Final_2of2CARIS Raster Surface (CUBE)0.51.123419.7870NOAA_0.5mObject DetectionH13147_MBAB_1m_TJ2903_300kHz_1of2MB Backscatter Mosaic Geotiff1N/AObject DetectionH13147_MBAB_1m_TJ2904_300kHz_2of2MB Backscatter Mosaic Geotiff1N/AObject DetectionObject Detection coverage requirements were met by 100% Object Detection multibeam coverage as specified under section 5.2.2.2 of the HSSD (2018). All bathymetric grids for H13147 meet density requirements per the HSSD 2018 (Figures 12-13). 38 holidays were identified in H13147 bathymetric surfaces using procedures outlined in the DAPR. Surface H13147_MB_50cm_MLLW_1of2 had a total of 34 holidays (Figures 14-25) and surface H13147_MB_50cm_MLLW_2of2 had a total of 4 holidays (Figures 26-27); however, only six holidays existed when bathymetric surfaces are combined with the 2018 USACE LiDAR data (Figures 23-25, 27). Seven of the 34 holidays in surface H13147_MB_50cm_MLLW_1of2 are present within data acquired for reconnaissance and LiDAR verification (Figures 14 and 15). All holidays are shown below.H13147 density statistics for surface grid H13147_MB_50cm_MLLW_Final_1of2.SupportFiles\H13147_MB_50cm_MLLW_Final_1of2.QAv5.density.pngH13147 density statistics for surface grid H13147_MB_50cm_MLLW_Final_2of2.SupportFiles\H13147_MB_50cm_MLLW_Final_2of2.QAv5.density.pngTwo holidays in surface H13147_MB_50cm_MLLW_1of2 are present within data acquired for reconnaissance and LiDAR verification. These holidays are located within the Bahia de Rincon, east of Cayo Mata. SupportFiles\Holiday_mata.jpgFive holidays in surface H13147_MB_50cm_MLLW_1of2 are present within data acquired for reconnaissance and LiDAR verification. These holidays are located east of Cayos de Barca, southwest of Cayos Caribes, and within the Boca del Infierno.SupportFiles\Holiday_4-8.jpgTwo Holidays in surface H13147_MB_50cm_MLLW_1of2. Located within the southern section of Bahia de Jobos and east of Punta Pozuelo.SupportFiles\Holiday_2-3.jpgH13147_MB_50cm_MLLW_1of2 holiday located south of Cayos de Ratones.SupportFiles\Holiday_9.jpgH13147_MB_50cm_MLLW_1of2 holiday located south of Cayos de Ratones and northeast of the holiday mentioned in Figure 17.SupportFiles\Holiday_10.jpgH13147_MB_50cm_MLLW_1of2 holiday located south of Cayo Mata and north of the most western island of the Cayos de Ratones.SupportFiles\Holiday_12.jpgH13147_MB_50cm_MLLW_1of2 holidays represented with a blue number 1. Located south of Cayo Mata and north of the most western island of the Cayos de Ratones. Northeast of the holiday mentioned in Figure 19.SupportFiles\Holiday_13-24.jpgH13147_MB_50cm_MLLW_1of2 holiday located south of Cayo Mata and north of the most western island of the Cayos de Ratones. Northwest of the holiday mentioned in Figure 19.SupportFiles\Holiday_25.jpgH13147_MB_50cm_MLLW_1of2 holidays represented with a blue number 1. Located south of Cayo Mata and north of the most western island of the Cayos de Ratones. Northeast of the holiday mentioned in Figure 21.SupportFiles\Holiday_26-30.jpgH13147_MB_50cm_MLLW_1of2 holiday as well as a holiday for a combined surface with 2018 USACE LiDAR data. Located within the southern section of the named sea area Bahia de Jobos and east of Punta Pozuelo.SupportFiles\Lidar_holiday_1.jpgH13147_MB_50cm_MLLW_1of2 holiday as well as a holiday for a combined surface with 2018 USACE LiDAR data. Located within the southern section of the named sea area Bahia de Jobos and east of Punta Pozuelo. Southwest of the holiday mentioned in Figure 23.SupportFiles\Holiday_1.jpgH13147_MB_50cm_MLLW_1of2 holiday as well as a holiday for a combined surface with 2018 USACE LiDAR data. Located southwest of the most western island of the Cayos de Ratones. SupportFiles\Holiday_11.jpgH13147_MB_50cm_MLLW_2of2 holiday located south of Punta Ola Grande.SupportFiles\Holiday.jpgH13147_MB_50cm_MLLW_2of2 holidays represented with a black number one. 2018 USACE LiDAR data represented as dark blue surface. Located south of Punta Ola Grande and north of the holiday mentioned in figure 26.SupportFiles\Holiday_31-33.jpgLiDAR junction analysisA junction analysis was conducted between 2018 USACE LiDAR data and survey H13147 CUBE surfaces. The comparison between the Bahia de Jobos portion of the survey (H13147_MB_50cm_MLLW_Final_1of2) and the 2018 USACE LiDAR data yielded a mean difference of 0.3288m and a standard deviation of 0.3018m. The range of differences was -4.5912m to 8.9093m (Figure 28). The comparison for the Las Mareas portion of the survey (H13147_MB_50cm_MLLW_Final_2of2) yielded a mean difference of 0.2027m and a standard deviation of 0.2958m. The range of differences was -2.0985m to 4.7661m(Figure 29). Difference statistics between 2018 USACE LiDAR geotiff and H13147_MB_50cm_MLLW_Final_1of2 CUBE surface.SupportFiles\H13147_1of2_Lidar.jpgDifference statistics between 2018 USACE LiDAR geotiff and H13147_MB_50cm_MLLW_Final_2of2 CUBE surface.SupportFiles\H13147_2of2_Lidar.jpgNo 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.csarNorth 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 H13147 MBES data.Comparisons were made between H13147 survey data and Electronic Navigation Chart (ENC) US5PR46M and ENC US5PR41M in accordance with methods outlined in the DAPR.US5PR46M2000062016-12-192016-12-19false14 soundings generated from H13147_MB_50cm_MLLW_1of2 soundings were significantly shoaler than soundings from ENC US5PR46M (Figures 30-34). A comparison of depth contours was conducted between H13147 and ENC US5PR46M at the depths specified within the ENC (Figures 35-43). The hydrographer recommends that the contours and soundings for ENC US5PR46M be reviewed and updated.ENC US5PR46M soundings in red, survey H13147 soundings in black. Circled soundings shown to be shoaler than charted soundings. Located north of Cayos de Pajaros.SupportFiles\ENC46_DTON_1.jpgENC US5PR46M soundings in red, survey H13147 soundings in black. Circled soundings shown to be shoaler than charted soundings. Located northwest of Cayos de Pajaros, northeast of Cayo Morrillo, and southwest of the soundings mentioned in figure 30.SupportFiles\ENC46_DTON_2.jpgENC US5PR46M soundings in red, survey H13147 soundings in black. Circled soundings shown to be shoaler than charted soundings. Located south, southwest of Cayo Morrillo.SupportFiles\ENC46_DTON_3.jpgENC US5PR46M soundings in red, survey H13147 soundings in black. Circled soundings shown to be shoaler than charted soundings. Located north of Cayos de Pajaros.SupportFiles\ENC46_DTON_4.jpgENC US5PR46M soundings in red, survey H13147 soundings in black. Circled soundings shown to be shoaler than charted soundings. Located east, southeast of Cayo Mata.SupportFiles\ENC46_DTON_5.jpgContour discrepancies between field created contours and ENC US5PR46M contours. ENC US5PR46M contours represented in black. Survey H13147 contours represented in orange. Located north of Cayos de Barca.SupportFiles\Contour_1.jpgContour discrepancies between field created contours and ENC US5PR46M contours. ENC US5PR46M contours represented in black. Survey H13147 contours represented in orange. Located north of the eastern side of Cayos de Pajaros.SupportFiles\Contour_2.jpgContour discrepancies between field created contours and ENC US5PR46M contours. ENC US5PR46M contours represented in black. Survey H13147 contours represented in orange. Located southeast of Cayo Morrillo.SupportFiles\Contour_3.jpgContour discrepancies between field created contours and ENC US5PR46M contours. ENC US5PR46M contours represented in black. Survey H13147 contours represented in orange. Located southwest of Cayo Morrillo.SupportFiles\Contour_4.jpgContour discrepancies between field created contours and ENC US5PR46M contours. ENC US5PR46M contours represented in black. Survey H13147 contours represented in orange. Located north of Cayo Morrillo.SupportFiles\Contour_5.jpgContour discrepancies between field created contours and ENC US5PR46M contours. ENC US5PR46M contours represented in black. Survey H13147 contours represented in orange. Located south of Cayos de Ratones.SupportFiles\Contour_6.jpgContour discrepancies between field created contours and ENC US5PR46M contours. ENC US5PR46M contours represented in black. Survey H13147 contours represented in orange. Located south of the most western island of Cayos de Ratones.SupportFiles\Contour_7.jpgContour discrepancies between field created contours and ENC US5PR46M contours. ENC US5PR46M contours represented in black. Survey H13147 contours represented in orange. Located south of the most western island of Cayos de Ratones.SupportFiles\Contour_8.jpgContour discrepancies between field created contours and ENC US5PR46M contours. ENC US5PR46M contours represented in black. Survey H13147 contours represented in orange. Located south of Cayos de Ratones and southeast of Punta Arenas.SupportFiles\Contour_9.jpgUS5PR41M2000032015-03-182015-03-18falseA comparison of depth contours was conducted between H13147 and ENC US5PR46M at the depths specified within the ENC (Figure 44). The hydrographer recommends that the contours for ENC US5PR41M be reviewed and updated.Field created contours within Laguna de las Mareas, located in the northwestern section of the entrance channel to Las Mareas, are shown in orange. Charted 18.2m contour that is not present, as shown by soundings created from H13147 MBES data.SupportFiles\H13147_20f218mcurve.pngNo Maritime Boundary Points were assigned for this survey.50 charted features were investigated. Four features were deemed appropriate for updating, nine features were deemed appropriate for deletion, and 37 features were deemed appropriate to be retained. The four features deemed appropriate for updating are obstruction areas outlining reef areas. Reference the Final Feature File for further information.13 uncharted features were identified and investigated. Three of the uncharted features were considered dangerous to navigation (see D.1.5). Reference the Final Feature File for further information.One obstruction and two wrecks were deemed dangers to navigation. Reference the Final Feature File and relevant DtoN Report documents for further information.An 18.2m charted contour on ENC US5PR41M within Laguna de las Mareas Channel is not present within survey H13147 MBES data and appears to be erroneously included on the ENC (see section D.1.1, ENC US5PR41M). Portions of the Laguna de las Mareas channel are shoaler than indicated by the depth value associated with the two channel sections. Field created soundings are not significantly shoaler than the associated depth value and are not regarded as DtoN's by the hydrographer. The hydrographer recommends channel extents or depths be updated.The bottom sample plan was designed to cover the distinct bottom types within the survey sheet limits after an analysis of preliminary backscatter mosaics (Figure 45). 10 bottom samples were collected by HSL 2903. Reference the Final Feature File for further information.H13147 revised bottom sample plan plotted over H13147 backscatter data.SupportFiles\Bottom samples.jpgShoreline was not assigned in the Hydrographic Survey Project Instructions or Statement of Work.Aids to navigation (ATONs) exist for this survey, but were not investigated. Contact United States Coast Gaurd for information about ATON features.No overhead features exist for this survey.Three submarine pipeline features exist for this survey, but were not investigated due to their location.No platforms exist for this survey.No ferry routes or terminals exist for this survey.No abnormal seafloor and/or environmental conditions exist for this survey.No present or planned construction or dredging activities are known to 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.CAPT Christiaan van Westendorp, NOAA Commanding Officer / Chief of Party2019-04-09LT Charles J. Wisotzkey, NOAAField Operations Officer2019-04-09Joshua HiteshewChief Hydrographic Survey Technician2019-04-09