<?xml version="1.0" encoding="utf-8"?>
<dr:descriptiveReport xmlns:dr="http://svn.pydro.noaa.gov/2022/01/DescriptiveReport" xmlns:hsd="http://svn.pydro.noaa.gov/2022/01/AllGlobalTypes" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://svn.pydro.noaa.gov/2022/01/DescriptiveReport http://svn.pydro.noaa.gov/2022/01/DR.xsd">
    <dr:metadata>
        <dr:projectMetadata>
            <hsd:number>OPR-C319-FH-21</hsd:number>
            <hsd:name>Approaches to New York</hsd:name>
            <hsd:generalLocality>Offshore New Jersey</hsd:generalLocality>
            <hsd:fieldUnit>NOAA Ship Ferdinand Hassler (S250)</hsd:fieldUnit>
        </dr:projectMetadata>
        <dr:registryMetadata>
            <hsd:registryNumber>H13475</hsd:registryNumber>
            <hsd:sheetID>2</hsd:sheetID>
            <hsd:registryInstructions xsi:nil="true" />
            <hsd:sublocality>Shark River Inlet</hsd:sublocality>
            <hsd:stateOrTerritory>New Jersey</hsd:stateOrTerritory>
            <hsd:country>United States</hsd:country>
            <hsd:scale>10000</hsd:scale>
        </dr:registryMetadata>
        <dr:surveyMetadata>
            <hsd:year>2021</hsd:year>
            <hsd:chiefOfParty>Michael Gonsalves, CDR/NOAA</hsd:chiefOfParty>
            <hsd:projectType>Navigable Area</hsd:projectType>
            <hsd:PIDate>2021-04-23</hsd:PIDate>
            <hsd:datesOfSurvey>
                <hsd:start>2021-07-29</hsd:start>
                <hsd:end>2021-10-07</hsd:end>
            </hsd:datesOfSurvey>
            <hsd:equipmentTypes>
                <hsd:soundingEquipment>Multibeam Echo Sounder</hsd:soundingEquipment>
                <hsd:imageryEquipment>Side Scan Sonar</hsd:imageryEquipment>
                <hsd:imageryEquipment>Multibeam Echo Sounder Backscatter</hsd:imageryEquipment>
            </hsd:equipmentTypes>
            <hsd:acquisition>
                <hsd:units>meters</hsd:units>
            </hsd:acquisition>
            <hsd:timeZone>UTC</hsd:timeZone>
            <hsd:verifier>Pacific Hydrographic Branch</hsd:verifier>
            <hsd:titlesheetRemarks>
                <hsd:fieldRemarks xsi:nil="true" />
                <hsd:branchRemarks>Any 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 18N, MLLW. All references to other horizontal or vertical datums in this report are applicable to the processed hydrographic data provided by the field unit.</hsd:branchRemarks>
            </hsd:titlesheetRemarks>
        </dr:surveyMetadata>
        <dr:dataLicense>
            <hsd:classification>CC0-1.0 (NOAA Field Units)</hsd:classification>
            <hsd:spdx>
                <hsd:licenseIdentifier>CC0-1.0</hsd:licenseIdentifier>
                <hsd:licenseDeed>https://creativecommons.org/publicdomain/zero/1.0/</hsd:licenseDeed>
                <hsd:legalCode>https://creativecommons.org/publicdomain/zero/1.0/legalcode</hsd:legalCode>
            </hsd:spdx>
            <hsd:description>These data were produced by NOAA and are in the public domain within the United States. NOAA waives any potential copyright and related rights in these data worldwide through the Creative Commons Zero 1.0 Universal Public Domain Dedication (CC0).</hsd:description>
        </dr:dataLicense>
        <dr:assignment>NOAA</dr:assignment>
    </dr:metadata>
    <dr:areaSurveyed>
        <dr:areaDescription>
            <hsd:discussion>Survey H13475, located within the Approaches to New York, sub locality of Shark River Inlet was conducted in accordance with coverage requirements set forth in the Project Instructions OPR-C319-FH-21 (Figure 1).</hsd:discussion>
            <hsd:limits>
                <hsd:northWest>
                    <hsd:latitude hemisphere="N">40.2574975</hsd:latitude>
                    <hsd:longitude hemisphere="W">73.9842108888889</hsd:longitude>
                </hsd:northWest>
                <hsd:southEast>
                    <hsd:latitude hemisphere="N">40.131233583333334</hsd:latitude>
                    <hsd:longitude hemisphere="W">73.85168644444444</hsd:longitude>
                </hsd:southEast>
            </hsd:limits>
            <hsd:images>
                <hsd:caption>Survey layout for H13475, plotted over ENC US4NY1AM. Black outline represents the survey limits set forth by the Project Instructions.</hsd:caption>
                <hsd:link>file:///M:/OPRC319FH21/Surveys/H13475/01_HDR/Reports/Descriptive_Report/Images/A.1%20Coverage%20Overview.png</hsd:link>
            </hsd:images>
            <hsd:comments />
        </dr:areaDescription>
        <dr:surveyLimits>
            <hsd:results deviation="true">
                <hsd:discussion>Survey data were acquired in accordance with the requirements set forth by the Project Instructions (PI) and the Hydrographic Surveys Specifications and Deliverables (HSSD) dated April 2021.</hsd:discussion>
            </hsd:results>
            <hsd:comments />
        </dr:surveyLimits>
        <dr:surveyPurpose>
            <hsd:topic>
                <hsd:discussion>The Port of New York and New Jersey, is the largest importer of goods in the United States by volume, handling over 74,000,000 short tons in 2018. With larger Post-Panamax ships with deeper drafts often calling upon the Port of New York and New Jersey, accurate navigational charts are essential for the continued safe transit of vessels in and out of the Port.

This 930 square nautical mile survey area offshore of the coast of New Jersey encompasses two traffic separation schemes for large vessels calling upon the Port of New York and New Jersey, and will supersede 1970 vintage chart data for the area.

This project will provide modern bathymetric data to update National Ocean Service (NOS) nautical charting products as well as support the Seabed 2030 global mapping initiative in this heavily trafficked area, which supports commerce along the eastern seaboard.</hsd:discussion>
            </hsd:topic>
            <hsd:comments />
        </dr:surveyPurpose>
        <dr:surveyQuality>
            <hsd:adequacy>The entire survey is adequate to supersede previous data.</hsd:adequacy>
            <hsd:discussion>Data acquired in H13475 meet the complete coverage requirements as specified by the 2021 HSSD. This includes crosslines (see Section B.2.1), NOAA allowable uncertainty (see Section B.2.2), and density requirements (see Section B.5.2).</hsd:discussion>
            <hsd:comments />
        </dr:surveyQuality>
        <dr:surveyCoverage>
            <hsd:coverageRequirement>
                <hsd:waterDepth>All waters in survey area</hsd:waterDepth>
                <hsd:requiredCoverage>Complete Coverage (Refer to HSSD Section 5.2.2.3)</hsd:requiredCoverage>
            </hsd:coverageRequirement>
            <hsd:results deviation="true">
                <hsd:discussion>Survey coverage is in accordance with requirements listed in Table 2 and in the 2021 HSSD. Coverage requirements were met with a combination of 100% complete coverage multibeam echosounder (MBES) coverage and 100% side scan sonar (SSS) with concurrent MBES coverage. Complete coverage MBES was used to reacquire areas of poor-quality SSS data created by refraction (see Section B.2.6) . See Image 2 for coverage details.</hsd:discussion>
            </hsd:results>
            <hsd:comments />
        </dr:surveyCoverage>
        <dr:coverageGraphic>
            <hsd:coverageGraphicImage>
                <hsd:images>
                    <hsd:caption>Complete Coverage SSS (greyscale) plotted over MBES coverage acquired on H13475. Black outline represents sheet limits assigned in the PI.</hsd:caption>
                    <hsd:link>file:///M:/OPRC319FH21/Surveys/H13475/01_HDR/Reports/Descriptive_Report/Images/A.4%20Coverage%20Types.png</hsd:link>
                </hsd:images>
            </hsd:coverageGraphicImage>
        </dr:coverageGraphic>
        <dr:surveyStatistics>
            <hsd:LNM>
                <hsd:vesselLNM>
                    <hsd:vessel>
                        <hsd:hullID>S250</hsd:hullID>
                        <hsd:statistics>
                            <hsd:MS_SBES>0.0</hsd:MS_SBES>
                            <hsd:MS_MBES>310.96</hsd:MS_MBES>
                            <hsd:MS_lidar>0.0</hsd:MS_lidar>
                            <hsd:MS_SSS>0.0</hsd:MS_SSS>
                            <hsd:MS_SBES_MBES>0.0</hsd:MS_SBES_MBES>
                            <hsd:MS_MBES_SSS>662.98</hsd:MS_MBES_SSS>
                            <hsd:MS_SBES_SSS>0.0</hsd:MS_SBES_SSS>
                            <hsd:XL_MBES_SBES>47.86</hsd:XL_MBES_SBES>
                            <hsd:XL_lidar>0.0</hsd:XL_lidar>
                        </hsd:statistics>
                    </hsd:vessel>
                    <hsd:vessel>
                        <hsd:hullID>2702</hsd:hullID>
                        <hsd:statistics>
                            <hsd:MS_SBES>0.0</hsd:MS_SBES>
                            <hsd:MS_MBES>16.73</hsd:MS_MBES>
                            <hsd:MS_lidar>0.0</hsd:MS_lidar>
                            <hsd:MS_SSS>0.0</hsd:MS_SSS>
                            <hsd:MS_SBES_MBES>0.0</hsd:MS_SBES_MBES>
                            <hsd:MS_MBES_SSS>0.0</hsd:MS_MBES_SSS>
                            <hsd:MS_SBES_SSS>0.0</hsd:MS_SBES_SSS>
                            <hsd:XL_MBES_SBES>0.0</hsd:XL_MBES_SBES>
                            <hsd:XL_lidar>0.0</hsd:XL_lidar>
                        </hsd:statistics>
                    </hsd:vessel>
                </hsd:vesselLNM>
                <hsd:totalLNM>
                    <hsd:MS_SBES>0.0</hsd:MS_SBES>
                    <hsd:MS_MBES>327.7</hsd:MS_MBES>
                    <hsd:MS_lidar>0.0</hsd:MS_lidar>
                    <hsd:MS_SSS>0.0</hsd:MS_SSS>
                    <hsd:MS_SBES_MBES>0.0</hsd:MS_SBES_MBES>
                    <hsd:MS_MBES_SSS>662.98</hsd:MS_MBES_SSS>
                    <hsd:MS_SBES_SSS>0.0</hsd:MS_SBES_SSS>
                    <hsd:XL_MBES_SBES>47.86</hsd:XL_MBES_SBES>
                    <hsd:XL_lidar>0.0</hsd:XL_lidar>
                    <hsd:percentXLLNM>4.6</hsd:percentXLLNM>
                </hsd:totalLNM>
            </hsd:LNM>
            <hsd:totalSurveyStats>
                <hsd:bottomSamples>6</hsd:bottomSamples>
                <hsd:maritimeBoundaryPoints>0</hsd:maritimeBoundaryPoints>
                <hsd:DP>0</hsd:DP>
                <hsd:diveOps>0</hsd:diveOps>
                <hsd:SNM>37.75</hsd:SNM>
            </hsd:totalSurveyStats>
            <hsd:surveyDates>2021-07-29</hsd:surveyDates>
            <hsd:surveyDates>2021-07-30</hsd:surveyDates>
            <hsd:surveyDates>2021-07-31</hsd:surveyDates>
            <hsd:surveyDates>2021-08-01</hsd:surveyDates>
            <hsd:surveyDates>2021-08-03</hsd:surveyDates>
            <hsd:surveyDates>2021-08-04</hsd:surveyDates>
            <hsd:surveyDates>2021-08-12</hsd:surveyDates>
            <hsd:surveyDates>2021-09-10</hsd:surveyDates>
            <hsd:surveyDates>2021-09-14</hsd:surveyDates>
            <hsd:surveyDates>2021-09-16</hsd:surveyDates>
            <hsd:surveyDates>2021-09-17</hsd:surveyDates>
            <hsd:surveyDates>2021-09-25</hsd:surveyDates>
            <hsd:surveyDates>2021-09-29</hsd:surveyDates>
            <hsd:surveyDates>2021-10-07</hsd:surveyDates>
            <hsd:discussion xsi:nil="true" />
            <hsd:comments />
        </dr:surveyStatistics>
    </dr:areaSurveyed>
    <dr:dataAcquisitionAndProcessing>
        <dr:equipmentAndVessels>
            <dr:discussion>Refer 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.  Additional information to supplement sounding and survey data, and any deviations from the DAPR are discussed in the following sections.</dr:discussion>
            <dr:vessels>
                <dr:vessel>
                    <hsd:hullID>S250</hsd:hullID>
                    <hsd:LOA units="meters">37.7</hsd:LOA>
                    <hsd:draft units="meters">3.85</hsd:draft>
                </dr:vessel>
                <dr:vessel>
                    <hsd:hullID>2702</hsd:hullID>
                    <hsd:LOA units="meters">8.4</hsd:LOA>
                    <hsd:draft units="meters">0.76</hsd:draft>
                </dr:vessel>
                <dr:images>
                    <hsd:caption>NOAA Ship Ferdinand R. Hassler (S250)</hsd:caption>
                    <hsd:link>file:///M:/OPRC319FH21/Surveys/H13475/01_HDR/Reports/Descriptive_Report/Images/Hassler.JPG</hsd:link>
                </dr:images>
                <dr:images>
                    <hsd:caption>NOAA Ship Ferdinand R. Hassler survey Launch 2702</hsd:caption>
                    <hsd:link>file:///M:/OPRC319FH21/Surveys/H13475/01_HDR/Reports/Descriptive_Report/Images/2702.png</hsd:link>
                </dr:images>
                <dr:discussion xsi:nil="true" />
                <dr:comments />
            </dr:vessels>
            <dr:equipment>
                <dr:majorSystem>
                    <hsd:type>MBES</hsd:type>
                    <hsd:manufacturer>Kongsberg Maritime</hsd:manufacturer>
                    <hsd:model>EM 2040</hsd:model>
                </dr:majorSystem>
                <dr:majorSystem>
                    <hsd:type>MBES Backscatter</hsd:type>
                    <hsd:manufacturer>Kongsberg Maritime</hsd:manufacturer>
                    <hsd:model>EM 2040</hsd:model>
                </dr:majorSystem>
                <dr:majorSystem>
                    <hsd:type>MBES</hsd:type>
                    <hsd:manufacturer>R2Sonic</hsd:manufacturer>
                    <hsd:model>2022</hsd:model>
                </dr:majorSystem>
                <dr:majorSystem>
                    <hsd:type>SSS</hsd:type>
                    <hsd:manufacturer>Klein Marine Systems</hsd:manufacturer>
                    <hsd:model>System 5000</hsd:model>
                </dr:majorSystem>
                <dr:majorSystem>
                    <hsd:type>Conductivity, Temperature, and Depth Sensor</hsd:type>
                    <hsd:manufacturer>AML Oceanographic</hsd:manufacturer>
                    <hsd:model>MVP200</hsd:model>
                </dr:majorSystem>
                <dr:majorSystem>
                    <hsd:type>Sound Speed System</hsd:type>
                    <hsd:manufacturer>Teledyne RESON</hsd:manufacturer>
                    <hsd:model>SVP 70</hsd:model>
                </dr:majorSystem>
                <dr:majorSystem>
                    <hsd:type>Positioning and Attitude System</hsd:type>
                    <hsd:manufacturer>Applanix</hsd:manufacturer>
                    <hsd:model>POS MV 320 v5</hsd:model>
                </dr:majorSystem>
                <dr:majorSystem>
                    <hsd:type>Conductivity, Temperature, and Depth Sensor</hsd:type>
                    <hsd:manufacturer>Sea-Bird Scientific</hsd:manufacturer>
                    <hsd:model>SBE 19plus</hsd:model>
                </dr:majorSystem>
                <dr:discussion xsi:nil="true" />
                <dr:comments />
            </dr:equipment>
            <dr:comments />
        </dr:equipmentAndVessels>
        <dr:qualityControl>
            <dr:crosslines>
                <hsd:topic>
                    <hsd:discussion>S250 collected 47.86 linear nautical miles of MBES crosslines, or 4.6% of mainscheme MBES data. A 4m surface of mainscheme data and a 4m surface of crossline data were differenced - the resulting mean was 0m with a standard deviation of 0.08m (Figure 4). Over 99.5% of nodes pass the fraction of allowable error analysis (Figure 5). The crosslines acquired have good temporal and geographic distribution, and there is no indication of any comparison issues (Figure 6).</hsd:discussion>
                    <hsd:images>
                        <hsd:caption>H13475 crossline/mainscheme comparison statistics</hsd:caption>
                        <hsd:link>file:///M:/OPRC319FH21/Surveys/H13475/01_HDR/Reports/Descriptive_Report/Images/B.2%20XL%20Depth%20Delta.png</hsd:link>
                    </hsd:images>
                    <hsd:images>
                        <hsd:caption>H13475 crossline/mainscheme fraction of allowable error statistics</hsd:caption>
                        <hsd:link>file:///M:/OPRC319FH21/Surveys/H13475/01_HDR/Reports/Descriptive_Report/Images/B.2%20XL_fracAllowErr_Freq.png</hsd:link>
                    </hsd:images>
                    <hsd:images>
                        <hsd:caption>H13475 crosslines overlaid on mainscheme MBES coverage. Crosslines colored by results of fraction of allowable error analysis.</hsd:caption>
                        <hsd:link>file:///M:/OPRC319FH21/Surveys/H13475/01_HDR/Reports/Descriptive_Report/Images/B.2%20XL%20Coverage.png</hsd:link>
                    </hsd:images>
                </hsd:topic>
                <hsd:comments />
            </dr:crosslines>
            <dr:uncertainty>
                <hsd:values>
                    <hsd:tideUncertainty>
                        <hsd:tideMethod>ERS via VDATUM</hsd:tideMethod>
                        <hsd:measured units="meters">0.0</hsd:measured>
                        <hsd:zoning units="meters">0.092</hsd:zoning>
                    </hsd:tideUncertainty>
                    <hsd:soundSpeedUncertainty>
                        <hsd:hullID>S250</hsd:hullID>
                        <hsd:measuredCTD units="meters/second">4</hsd:measuredCTD>
                        <hsd:measuredMVP units="meters/second">1</hsd:measuredMVP>
                        <hsd:measuredXBT units="meters/second">n/a</hsd:measuredXBT>
                        <hsd:surface units="meters/second">0.5</hsd:surface>
                    </hsd:soundSpeedUncertainty>
                    <hsd:soundSpeedUncertainty>
                        <hsd:hullID>2702</hsd:hullID>
                        <hsd:measuredCTD units="meters/second">4</hsd:measuredCTD>
                        <hsd:measuredMVP units="meters/second">n/a</hsd:measuredMVP>
                        <hsd:measuredXBT units="meters/second">n/a</hsd:measuredXBT>
                        <hsd:surface units="meters/second">0.5</hsd:surface>
                    </hsd:soundSpeedUncertainty>
                </hsd:values>
                <hsd:discussion>The bathymetric surface's uncertainty layer is compliant with the 2021 HSSD uncertainty standards. Over 99.5% of all nodes pass uncertainty standards (Figure 7).</hsd:discussion>
                <hsd:images>
                    <hsd:caption>H13475 uncertainty standards.</hsd:caption>
                    <hsd:link>file:///M:/OPRC319FH21/Surveys/H13475/01_HDR/Reports/Descriptive_Report/Images/B.2%20QAv6tvu_uncertainty.png</hsd:link>
                </hsd:images>
                <hsd:comments />
            </dr:uncertainty>
            <dr:junctions>
                <hsd:discussion>There are four surveys that junction with H13475. H13474 was acquired concurrently with H13475 while on OPR-C319-FH-21. The remaining surveys are historical: H12609 (2015), H12628 (2013), and H11536 (2006). Analysis of the comparisons of each junction with H13475 are below. </hsd:discussion>
                <hsd:images>
                    <hsd:caption>H13475 (outlined in blue and colored in Rainbow) with contemporary survey H13474 (magenta), and historical surveys H11536 (golden), H12628 (brown), and H12609 (gray scale). </hsd:caption>
                    <hsd:link>file:///M:/OPRC319FH21/Surveys/H13475/01_HDR/Reports/Descriptive_Report/Images/B.2%20JunctionsOverview.png</hsd:link>
                </hsd:images>
                <hsd:junction>
                    <hsd:survey>
                        <hsd:registryNumber>H11536</hsd:registryNumber>
                        <hsd:scale>20000</hsd:scale>
                        <hsd:year>2006</hsd:year>
                        <hsd:fieldUnit>M/V Atlantic Surveyor</hsd:fieldUnit>
                        <hsd:relativeLocation>W</hsd:relativeLocation>
                    </hsd:survey>
                    <hsd:discussion>The junction with survey H11536 encompasses approximately 0.33 square nautical miles along the northern border of coverage. The Compare Grids function of Pydro Explorer derived a difference surface from H13475 2-meter resolution surface and H11536 2-meter resolution surface. Pydro Compare Grids showed that 99% of nodes in the overlapping area met NOAA allowable error standards. Analysis of the difference surface indicated that there is a -0.02m average difference between the two surveys. For additional results, see figures below.</hsd:discussion>
                    <hsd:images>
                        <hsd:caption>H11536 difference surface overlaid on H13475 tracklines. </hsd:caption>
                        <hsd:link>file:///M:/OPRC319FH21/Surveys/H13475/01_HDR/Reports/Descriptive_Report/Images/B.2.3%20H11536%20Coverage.png</hsd:link>
                    </hsd:images>
                    <hsd:images>
                        <hsd:caption>Pydro derived plot showing percentage-pass value of nodes in H13475 and H11536.</hsd:caption>
                        <hsd:link>file:///M:/OPRC319FH21/Surveys/H13475/01_HDR/Reports/Descriptive_Report/Images/B.2.3%20H11536_fracAllowErr_Freq.png</hsd:link>
                    </hsd:images>
                    <hsd:images>
                        <hsd:caption>Pydro derived plot showing absolute difference statistics of H13475 and H11536.</hsd:caption>
                        <hsd:link>file:///M:/OPRC319FH21/Surveys/H13475/01_HDR/Reports/Descriptive_Report/Images/B.2.3%20H11536%20Depth%20Delta.png</hsd:link>
                    </hsd:images>
                    <hsd:comments />
                </hsd:junction>
                <hsd:junction>
                    <hsd:survey>
                        <hsd:registryNumber>H12609</hsd:registryNumber>
                        <hsd:scale>20000</hsd:scale>
                        <hsd:year>2013</hsd:year>
                        <hsd:fieldUnit>C&amp;C Technologies</hsd:fieldUnit>
                        <hsd:relativeLocation>N</hsd:relativeLocation>
                    </hsd:survey>
                    <hsd:discussion>The junction with survey H12609 encompasses approximately 0.55 square nautical miles along the southern  border of coverage. The Compare Grids function of Pydro Explorer derived a difference surface from H13475 4-meter resolution surface and H12609 4-meter resolution surface. Pydro Compare Grids showed that 99.5% of nodes in the overlapping area met NOAA allowable error standards. Analysis of the difference surface indicated that there is a 0.08m average difference between the two surveys. For additional results, see figures below.</hsd:discussion>
                    <hsd:images>
                        <hsd:caption>H12609 difference surface overlaid on H13475 tracklines. </hsd:caption>
                        <hsd:link>file:///M:/OPRC319FH21/Surveys/H13475/01_HDR/Reports/Descriptive_Report/Images/B.2.3%20H12609%20Coverage.png</hsd:link>
                    </hsd:images>
                    <hsd:images>
                        <hsd:caption>Pydro derived plot showing percentage-pass value of nodes in H13475 and H12609.</hsd:caption>
                        <hsd:link>file:///M:/OPRC319FH21/Surveys/H13475/01_HDR/Reports/Descriptive_Report/Images/B.2.3%20H12609_fracAllowErr_Freq.png</hsd:link>
                    </hsd:images>
                    <hsd:images>
                        <hsd:caption>Pydro derived plot showing absolute difference statistics of H13475 and H12609.</hsd:caption>
                        <hsd:link>file:///M:/OPRC319FH21/Surveys/H13475/01_HDR/Reports/Descriptive_Report/Images/B.2.3%20H12609%20Depth%20Delta.png</hsd:link>
                    </hsd:images>
                    <hsd:comments />
                </hsd:junction>
                <hsd:junction>
                    <hsd:survey>
                        <hsd:registryNumber>H13474</hsd:registryNumber>
                        <hsd:scale>20000</hsd:scale>
                        <hsd:year>2021</hsd:year>
                        <hsd:fieldUnit>NOAA Ship Ferdinand R. Hassler</hsd:fieldUnit>
                        <hsd:relativeLocation>E</hsd:relativeLocation>
                    </hsd:survey>
                    <hsd:discussion>The junction with survey H13474 encompasses approximately 0.4 square nautical miles along the eastern border of coverage. The Compare Grids function of Pydro Explorer derived a difference surface from H13475 variable resolution surface and H13474 variable resolution surface. Pydro Compare Grids showed that 100% of nodes in the overlapping area met NOAA allowable error standards. Analysis of the difference surface indicated that there is a 0m average difference between the two surveys. For additional results, see figures below.</hsd:discussion>
                    <hsd:images>
                        <hsd:caption>H13474 difference surface overlaid on H13475 tracklines. </hsd:caption>
                        <hsd:link>file:///M:/OPRC319FH21/Surveys/H13475/01_HDR/Reports/Descriptive_Report/Images/B.2.3%20H13474%20Coverage.png</hsd:link>
                    </hsd:images>
                    <hsd:images>
                        <hsd:caption>Pydro derived plot showing percentage-pass value of nodes in H13475 and H13474.</hsd:caption>
                        <hsd:link>file:///M:/OPRC319FH21/Surveys/H13475/01_HDR/Reports/Descriptive_Report/Images/B.2.3%20H13474_fracAllowErr_Freq.png</hsd:link>
                    </hsd:images>
                    <hsd:images>
                        <hsd:caption>Pydro derived plot showing absolute difference statistics of H13475 and H13474.</hsd:caption>
                        <hsd:link>file:///M:/OPRC319FH21/Surveys/H13475/01_HDR/Reports/Descriptive_Report/Images/B.2.3%20H13474%20Depth%20Delta.png</hsd:link>
                    </hsd:images>
                    <hsd:comments />
                </hsd:junction>
                <hsd:junction>
                    <hsd:survey>
                        <hsd:registryNumber>H12628</hsd:registryNumber>
                        <hsd:scale>40000</hsd:scale>
                        <hsd:year>2013</hsd:year>
                        <hsd:fieldUnit>NOAA Ship Ferdinand R. Hassler</hsd:fieldUnit>
                        <hsd:relativeLocation>NE</hsd:relativeLocation>
                    </hsd:survey>
                    <hsd:discussion>The junction with survey H12628 encompasses approximately 0.35 square nautical miles along the eastern border of coverage. The Compare Grids function of Pydro Explorer derived a difference surface from H13475 variable resolution surface and H12628 4m resolution surface. Pydro Compare Grids showed that 100% of nodes in the overlapping area met NOAA allowable error standards. Analysis of the difference surface indicated that there is a 0.02m average difference between the two surveys. For additional results, see figures below.</hsd:discussion>
                    <hsd:images>
                        <hsd:caption>H12628 difference surface overlaid on H13475 tracklines. </hsd:caption>
                        <hsd:link>file:///M:/OPRC319FH21/Surveys/H13475/01_HDR/Reports/Descriptive_Report/Images/B.2.3%20H12628%20Coverage.png</hsd:link>
                    </hsd:images>
                    <hsd:images>
                        <hsd:caption>Pydro derived plot showing percentage-pass value of nodes in H13475 and H12628.</hsd:caption>
                        <hsd:link>file:///M:/OPRC319FH21/Surveys/H13475/01_HDR/Reports/Descriptive_Report/Images/B.2.3%20H12628_fracAllowErr_Freq.png</hsd:link>
                    </hsd:images>
                    <hsd:images>
                        <hsd:caption>Pydro derived plot showing absolute difference statistics of H13475 and H12628.</hsd:caption>
                        <hsd:link>file:///M:/OPRC319FH21/Surveys/H13475/01_HDR/Reports/Descriptive_Report/Images/B.2.3%20H12628%20Depth%20Delta.png</hsd:link>
                    </hsd:images>
                    <hsd:comments />
                </hsd:junction>
                <hsd:comments />
            </dr:junctions>
            <dr:sonarQCChecks>
                <hsd:results deviation="false">
                    <hsd:discussion>Sonar system quality control checks were conducted as detailed in the quality control section of the DAPR.</hsd:discussion>
                </hsd:results>
                <hsd:comments />
            </dr:sonarQCChecks>
            <dr:equipmentEffectiveness>
                <hsd:results deviation="false">
                    <hsd:issue>
                        <hsd:title>None Exist</hsd:title>
                        <hsd:discussion>There were no conditions or deficiencies that affected equipment operational effectiveness.</hsd:discussion>
                        <hsd:comments />
                    </hsd:issue>
                </hsd:results>
                <hsd:comments />
            </dr:equipmentEffectiveness>
            <dr:factorsAffectingSoundings>
                <hsd:results deviation="false">
                    <hsd:issue>
                        <hsd:title>None Exist</hsd:title>
                        <hsd:discussion>There were no other factors that affected corrections to soundings.</hsd:discussion>
                        <hsd:comments />
                    </hsd:issue>
                </hsd:results>
                <hsd:comments />
            </dr:factorsAffectingSoundings>
            <dr:soundSpeedMethods>
                <dr:castFrequency>Casts were conducted at the start of each acquisition day and within four hours of each previous cast per the 2021 HSSD specifications. S250 conducted casts using a Rolls Royce Brooke Ocean Moving Vessel Profiler (MVP) 200 and a Seabird SBE 19+ CTD. 2702 conducted casts using a Seabird SBE19+ CTD. Variations in surface sound speed were monitored by the survey watch to assess appropriate cast frequency. </dr:castFrequency>
                <dr:discussion>A total of 66 sound speed profiles were collected within the survey limits of H13475 and display good spatial diversity (Figure 22). All sound speed profile data were concatenated into a master file for the sheet. MBES data were corrected by applying profiles nearest in distance in time (4 hours) using this master file.</dr:discussion>
                <dr:images>
                    <hsd:caption>Overview of all SVP casts taken on H13475</hsd:caption>
                    <hsd:link>file:///M:/OPRC319FH21/Surveys/H13475/01_HDR/Reports/Descriptive_Report/Images/B.2%20SVP%20Cast%20Locations.png</hsd:link>
                </dr:images>
                <dr:comments />
            </dr:soundSpeedMethods>
            <dr:coverageEquipmentAndMethods>
                <hsd:results deviation="true">
                    <hsd:discussion>S250 acquired 100% side scan sonar coverage with concurrent multibeam and 100% complete coverage MBES to meet complete coverage requirements on survey H13475, as specified in the project instructions, using a Klein 5000V2 towfish and dual Kongsberg EM2040 multibeam systems. Survey launch 2702 acquired 100% MBES complete coverage requirements using an R2Sonic 2022 multibeam system. </hsd:discussion>
                </hsd:results>
                <hsd:comments />
            </dr:coverageEquipmentAndMethods>
            <dr:additionalQualityControl>
                <hsd:comments />
            </dr:additionalQualityControl>
        </dr:qualityControl>
        <dr:echoSoundingCorrections>
            <dr:corrections>
                <hsd:results deviation="false">
                    <hsd:discussion>All data reduction procedures conform to those detailed in the DAPR.</hsd:discussion>
                </hsd:results>
                <hsd:comments />
            </dr:corrections>
            <dr:calibrations>
                <hsd:results deviation="false">
                    <hsd:discussion>All sounding systems were calibrated as detailed in the DAPR.</hsd:discussion>
                    <hsd:calibration xsi:nil="true" />
                </hsd:results>
                <hsd:comments />
            </dr:calibrations>
            <dr:additionalIssues>
                <hsd:comments />
            </dr:additionalIssues>
        </dr:echoSoundingCorrections>
        <dr:backscatter>
            <hsd:results acquired="true">
                <hsd:discussion>All equipment and survey methods were used as detailed in the DAPR. Raw MBES backscatter was flagged as part of the .all file from the Kongsberg EM2040 systems. Backscatter was processed in QPS Fledermaus GeoCoder Toolbox (FMGT) software, and the exported geotiffs are include in the final processed data submission package (Figure 23).</hsd:discussion>
                <hsd:images>
                    <hsd:caption>H13475 backscatter mosaic. Mosaic in deliverables package has a 2m resolution.</hsd:caption>
                    <hsd:link>file:///M:/OPRC319FH21/Surveys/H13475/01_HDR/Reports/Descriptive_Report/Images/H13475_MBAB_2m_S250_300kHz_1of1.png</hsd:link>
                </hsd:images>
            </hsd:results>
            <hsd:comments />
        </dr:backscatter>
        <dr:dataProcessing>
            <dr:drSoftware>
                <dr:featureObjectCatalog>NOAA Profile Version 2021</dr:featureObjectCatalog>
                <dr:discussion>Refer to the DAPR for information on the Bathymetry Data Processing Software.</dr:discussion>
                <dr:comments />
            </dr:drSoftware>
            <dr:surfaces>
                <dr:surface>
                    <hsd:surfaceName>H13475_MB_VR_MLLW</hsd:surfaceName>
                    <hsd:surfaceType>CARIS VR Surface (CUBE)</hsd:surfaceType>
                    <hsd:resolution units="meters">Variable Resolution</hsd:resolution>
                    <hsd:depthRange>
                        <hsd:min units="meters">3.7</hsd:min>
                        <hsd:max units="meters">27.2</hsd:max>
                    </hsd:depthRange>
                    <hsd:surfaceParameter>NOAA_VR</hsd:surfaceParameter>
                    <hsd:purpose>Complete MBES</hsd:purpose>
                </dr:surface>
                <dr:surface>
                    <hsd:surfaceName>H13475_MB_VR_MLLW_Final</hsd:surfaceName>
                    <hsd:surfaceType>CARIS VR Surface (CUBE)</hsd:surfaceType>
                    <hsd:resolution units="meters">Variable Resolution</hsd:resolution>
                    <hsd:depthRange>
                        <hsd:min units="meters">3.7</hsd:min>
                        <hsd:max units="meters">27.2</hsd:max>
                    </hsd:depthRange>
                    <hsd:surfaceParameter>NOAA_VR</hsd:surfaceParameter>
                    <hsd:purpose>Complete MBES</hsd:purpose>
                </dr:surface>
                <dr:surface>
                    <hsd:surfaceName>H13475_SSSAB_1m_500kHz_1of1</hsd:surfaceName>
                    <hsd:surfaceType>SSS Mosaic</hsd:surfaceType>
                    <hsd:resolution units="meters">1</hsd:resolution>
                    <hsd:depthRange>
                        <hsd:min xsi:nil="true" />
                        <hsd:max xsi:nil="true" />
                    </hsd:depthRange>
                    <hsd:surfaceParameter>N/A</hsd:surfaceParameter>
                    <hsd:purpose>100% SSS</hsd:purpose>
                </dr:surface>
                <dr:surface>
                    <hsd:surfaceName>H13475_MBAB_2m_300kHz_1of1</hsd:surfaceName>
                    <hsd:surfaceType>MB Backscatter Mosaic</hsd:surfaceType>
                    <hsd:resolution units="meters">2</hsd:resolution>
                    <hsd:depthRange>
                        <hsd:min xsi:nil="true" />
                        <hsd:max xsi:nil="true" />
                    </hsd:depthRange>
                    <hsd:surfaceParameter>N/A</hsd:surfaceParameter>
                    <hsd:purpose>Complete MBES</hsd:purpose>
                </dr:surface>
                <dr:discussion>Complete coverage requirements were met by 100% side scan sonar coverage with concurrent multibeam and complete coverage multibeam as specified under section 5.2.2.3 of the 2022 HSSD. Over 99.5% of all nodes met density requirements as specified in the 2022 HSSD (Figure 24). 

After multiple rounds of surface cleaning, 3 fliers remain as detected by NOAA's QC Tools Flier Finder available in the Pydro_22. Upon further inspection, these flagged grid nodes are considered to be accurate representations of the sea floor and have been retained in the submitted surfaces.

QC Tools Holiday Finder identified 121 holidays, or data gaps, in the MB surface. Most of these are covered by SSS data in the eastern portion of the survey area. However, 30 holidays remain along the western side of the survey where there is no SSS coverage (Figure 18). These holidays were created after erroneous data was cleaned out of the final processed grids.  No features were observed inside of these data gaps prior to the cleaning.

Note:  due to time constraints, the Navigable Area Limit Line (NALL) was not achieved along the full extent of the western boundary of Sheet H13475.  Instead, additional data was only acquired around the approaches to the Shark River Inlet (Figure 25).</dr:discussion>
                <dr:images>
                    <hsd:caption>H13475 density statistics</hsd:caption>
                    <hsd:link>file:///M:/OPRC319FH21/Surveys/H13475/01_HDR/Reports/Descriptive_Report/Images/B.2%20QAv6.density.png</hsd:link>
                </dr:images>
                <dr:images>
                    <hsd:caption>H13475 holidays shown as orange targets. SSS mosaic covers the majority of the MB holidays on the eastern side of the survey area. On the western side, 30 holidays remain caused by erroneous data that was cleaned out of the processed data. No features were observed inside of these data gaps prior to cleaning. </hsd:caption>
                    <hsd:link>file:///M:/OPRC319FH21/Surveys/H13475/01_HDR/Reports/Descriptive_Report/Images/B.5.2%20Holidays.png</hsd:link>
                </dr:images>
                <dr:comments />
            </dr:surfaces>
            <dr:additionalDataProcessing>
                <hsd:comments />
            </dr:additionalDataProcessing>
        </dr:dataProcessing>
    </dr:dataAcquisitionAndProcessing>
    <dr:verticalAndHorizontalControl>
        <dr:discussion>Field installed tide and GPS stations were not utilized for this survey. There is no HVCR report included with the submission of H13475.</dr:discussion>
        <dr:verticalControl>
            <hsd:verticalDatum>Mean Lower Low Water</hsd:verticalDatum>
            <hsd:tideStations />
            <hsd:standard_or_ERZT xsi:nil="true" used="false" />
            <hsd:VDATUM_or_constantSep used="true">
                <hsd:methodsUsed>ERS via VDATUM</hsd:methodsUsed>
                <hsd:ellipsoidToChartDatumSepFile>
                    <hsd:fileName>OPR-C319-FH-21_NAD83_VDatum_MLLW</hsd:fileName>
                </hsd:ellipsoidToChartDatumSepFile>
                <hsd:discussion>All soundings submitted for H13475 are reduced to MLLW using VDatum techniques as outlined in the DAPR.</hsd:discussion>
                <hsd:comments />
            </hsd:VDATUM_or_constantSep>
            <hsd:comments />
        </dr:verticalControl>
        <dr:horizontalControl>
            <hsd:horizontalDatum>North American Datum 1983</hsd:horizontalDatum>
            <hsd:projection>Projected UTM 18</hsd:projection>
            <hsd:PPK used="true">
                <hsd:methodsUsed>RTX</hsd:methodsUsed>
                <hsd:baseStations />
                <hsd:discussion>Trimble-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 H13475 MBES data from vessel S250.</hsd:discussion>
                <hsd:comments />
            </hsd:PPK>
            <hsd:PPP xsi:nil="true" used="false" />
            <hsd:RTK xsi:nil="true" used="false" />
            <hsd:DGPS xsi:nil="true" used="false" />
            <hsd:WAAS used="true">
                <hsd:discussion>The Wide Area Augmentation System (WAAS) was used for real-time horizontal control during data acquisition on vessel S250.</hsd:discussion>
                <hsd:comments />
            </hsd:WAAS>
            <hsd:comments />
        </dr:horizontalControl>
        <dr:additionalIssues>
            <hsd:comments />
        </dr:additionalIssues>
    </dr:verticalAndHorizontalControl>
    <dr:resultsAndRecommendations>
        <dr:chartComparison>
            <dr:methods>
                <hsd:comments />
            </dr:methods>
            <dr:charts>
                <hsd:ENC>
                    <hsd:name>US3NY01M</hsd:name>
                    <hsd:scale>400000</hsd:scale>
                    <hsd:edition>53</hsd:edition>
                    <hsd:updateApplicationDate>2022-02-02</hsd:updateApplicationDate>
                    <hsd:issueDate>2022-08-01</hsd:issueDate>
                </hsd:ENC>
                <hsd:comments />
            </dr:charts>
            <dr:shoalAndHazardousFeatures>
                <hsd:results investigated="None Exist">
                    <hsd:discussion>No shoals or potentially hazardous features exist for this survey. No Danger to Navigation Reports were submitted.</hsd:discussion>
                </hsd:results>
                <hsd:comments />
            </dr:shoalAndHazardousFeatures>
            <dr:chartedFeatures>
                <hsd:results investigated="Investigated">
                    <hsd:discussion> Charted features were investigated and assessed per the HSSD. See the Final Feature File for more information. </hsd:discussion>
                </hsd:results>
                <hsd:comments />
            </dr:chartedFeatures>
            <dr:unchartedFeatures>
                <hsd:results investigated="Investigated">
                    <hsd:discussion> Several uncharted obstructions were identified and included in the Final Feature File. </hsd:discussion>
                </hsd:results>
                <hsd:comments />
            </dr:unchartedFeatures>
            <dr:channels>
                <hsd:results investigated="Exist - Not Investigated">
                    <hsd:discussion>Channels, designated anchorages, precautionary areas, safety fairways, traffic separation schemes, pilot boarding areas, and/or channel and range lines exist within the survey limits, but were not investigated. The easternmost edge of the survey area enters a traffic separation scheme but there is not enough data to provide analysis. </hsd:discussion>
                </hsd:results>
                <hsd:comments />
            </dr:channels>
        </dr:chartComparison>
        <dr:additionalResults>
            <dr:ATONS>
                <hsd:results investigated="None Exist">
                    <hsd:discussion>No Aids to navigation (ATONs) were assigned for this survey.</hsd:discussion>
                </hsd:results>
                <hsd:comments />
            </dr:ATONS>
            <dr:maritimeBoundary>
                <hsd:results investigated="None Exist">
                    <hsd:discussion>No Maritime Boundary Points were assigned for this survey.</hsd:discussion>
                </hsd:results>
                <hsd:comments />
            </dr:maritimeBoundary>
            <dr:bottomSamples>
                <hsd:results investigated="Investigated">
                    <hsd:discussion>Six bottom samples were assigned and investigated. Reference the Final Feature File for location and sample attribution.</hsd:discussion>
                </hsd:results>
                <hsd:comments />
            </dr:bottomSamples>
            <dr:overheadFeatures>
                <hsd:results investigated="None Exist">
                    <hsd:discussion>No overhead features exist for this survey.</hsd:discussion>
                </hsd:results>
                <hsd:comments />
            </dr:overheadFeatures>
            <dr:submarineFeatures>
                <hsd:results investigated="Investigated">
                    <hsd:discussion>Two charted pipelines were observed in the multibeam data as elevated and exposed. The northern of the two exposed pipelines is charted approx. 150m South of the location found in the MBES data. The two pipelines were submitted to the Nautical Data Branch. See the Final Feature File for more information. </hsd:discussion>
                    <hsd:images>
                        <hsd:caption>The northern exposed pipeline is visible in the MB grid. The pink dashed line depicts the charted pipeline. </hsd:caption>
                        <hsd:link>file:///M:/OPRC319FH21/Surveys/H13475/01_HDR/Reports/Descriptive_Report/Images/D.2.5%20ExposedPipeline_N.png</hsd:link>
                    </hsd:images>
                    <hsd:images>
                        <hsd:caption>The southern exposed pipeline is visible in the MB grid. The pink dashed line depicts the charted pipeline. </hsd:caption>
                        <hsd:link>file:///M:/OPRC319FH21/Surveys/H13475/01_HDR/Reports/Descriptive_Report/Images/D.2.5%20ExposedPipeline_S.png</hsd:link>
                    </hsd:images>
                </hsd:results>
                <hsd:comments />
            </dr:submarineFeatures>
            <dr:platforms>
                <hsd:results investigated="None Exist">
                    <hsd:discussion>No platforms exist for this survey.</hsd:discussion>
                </hsd:results>
                <hsd:comments />
            </dr:platforms>
            <dr:ferryRoutesAndTerminals>
                <hsd:results investigated="None Exist">
                    <hsd:discussion>No ferry routes or terminals exist for this survey.</hsd:discussion>
                </hsd:results>
                <hsd:comments />
            </dr:ferryRoutesAndTerminals>
            <dr:abnormalSeafloorEnviroCond>
                <hsd:results investigated="None Exist">
                    <hsd:discussion>No abnormal seafloor or environmental conditions exist for this survey.</hsd:discussion>
                </hsd:results>
                <hsd:comments />
            </dr:abnormalSeafloorEnviroCond>
            <dr:constructionOrDredging>
                <hsd:results investigated="None Exist">
                    <hsd:discussion>No present or planned construction or dredging exist within the survey limits.</hsd:discussion>
                </hsd:results>
                <hsd:comments />
            </dr:constructionOrDredging>
            <dr:newSurveyRecommendation>
                <hsd:results recommended="false">
                    <hsd:discussion>No new surveys or further investigations are recommended for this area.</hsd:discussion>
                </hsd:results>
                <hsd:comments />
            </dr:newSurveyRecommendation>
            <dr:ENCScaleRecommendation>
                <hsd:results recommended="false">
                    <hsd:discussion>No new ENC scales are recommended for this area.</hsd:discussion>
                </hsd:results>
                <hsd:comments />
            </dr:ENCScaleRecommendation>
        </dr:additionalResults>
    </dr:resultsAndRecommendations>
    <dr:approvalSheet>
        <dr:statements>
            <dr:supervision>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.</dr:supervision>
            <dr:approval>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.</dr:approval>
            <dr:adequacyOfSurvey>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.</dr:adequacyOfSurvey>
            <dr:additionalInfo xsi:nil="true" />
        </dr:statements>
        <dr:signingPersonnel>
            <hsd:approverName>Michael Gonsalves, CDR/NOAA</hsd:approverName>
            <hsd:approverTitle>Chief of Party</hsd:approverTitle>
            <hsd:approvalDate>2022-09-06</hsd:approvalDate>
        </dr:signingPersonnel>
        <dr:signingPersonnel>
            <hsd:approverName>Daniel Helmricks, LT/NOAA</hsd:approverName>
            <hsd:approverTitle>Operations Officer</hsd:approverTitle>
            <hsd:approvalDate>2022-09-06</hsd:approvalDate>
        </dr:signingPersonnel>
        <dr:signingPersonnel>
            <hsd:approverName>Julia Wallace</hsd:approverName>
            <hsd:approverTitle>Sheet Manager</hsd:approverTitle>
            <hsd:approvalDate>2022-09-06</hsd:approvalDate>
        </dr:signingPersonnel>
    </dr:approvalSheet>
</dr:descriptiveReport>