OPR-B310-TJ-13Approaches to New York, NYNew York, NYNOAA Ship THOMAS JEFFERSONH125273SW of Jones Beach IslandNew YorkUnited States100002013CDR Lawrence T. KreppBasic Hydrographic Survey2013-02-252013-05-292013-06-12Multibeam Echo SounderSinglebeam Echo Sounder Side Scan SonarmetersUniversal Transverse Mercator (UTM)UTCAtlantic Hydrographic BranchNOAAThis survey was conducted in the approaches to New York, in the immediate vicinity SW of Jones Beach.40.595333333373.599666666740.504666666773.4728333333The purpose of this project is to provide contemporary surveys to update National Ocean Service (NOS) nautical charting products. This project will cover approximately 87 square nautical miles (SNM) Critical and Priority 1, 3, and 4 areas as identified in the 2012 NOAA Hydrographic Survey Priorities (NHSP document).The entire survey is adequate to supersede previous data.Due to safety concerns, the inshore limit of the NALL was not reached for the entirety of survey H12527. This occurred on the western portion of the sheet near Jones Inlet; on multiple days, the survey launches were unable to move further in shore due to standing surf waves. 1Red coverage indicates where the 4 meter contour was reached. The outlined areas show where MBES coverage did not reach the 4 meter contour.file:///Z:/H12527/Data/Descriptive_Report/Images/H12527_4m_Curve.bmp2Large scale view of H12527 coverage area.file:///Z:/H12527/Data/Descriptive_Report/Images/H12527_Coverage.bmpSurvey Coverage was in accordance with the requirements in the Project Instructions and the HSSD.2013-05-292013-05-302013-06-042013-06-052013-06-062013-06-072013-06-102013-06-112013-06-12161000027.2S-222018.7000560.53.341.70310101.600084.307.70310201.2000157.1014.70021.5000801.93.364.108.0Values in the "Mainscheme MBES" category represent development lines where no side scan was operated. 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.S-222208153101315.23102315.2S222 acquired side scan data with concurrent multibeam acquisition, attitude data and bottom samples. S222 also acquired a total of five lines with side scan and concurrent single beam. Hydrographic survey launch (HSL) 3101 acquired side scan with concurrent multibeam acquisition, and attitude data. HSL 3102 acquired side scan with concurrent multibeam acquisition, attitude data and bottom samples.Reson7125MBESReson7125 SVMBESOdomEchotrac MKIIISBESKlein Associates5000SSSKlein Associates5500SSSApplanixPOS M/V v4Positioning and Attitude SystemTrimbleSPS351Positioning SystemSea-Bird ElectronicsSBE 19+Conductivity, Temperature, and Depth SensorBrooke Ocean TechnologyMoving Vessel Profiler 100Sound Speed SystemAML OceanographicAML Smart SV&P ProbeSound Speed SystemAML Oceanographic AML Smart SV&T ProbeSound Speed SystemResonSV70Sound Speed SystemThe Thomas Jefferson and her survey launches acquired 64.1 linear nautical miles of MBES and VBES crosslines, equating to 7.99% of mainscheme MBES and VBES data. Crosslines were compared to mainscheme using a difference surface, created in CARIS BathyData Base. Using the difference surface, every instance of overlap was evaluated. The mean was 0.012 meters and the standard deviation was 0.051 meters. Survey H12527 complies with section 5.2.4.3 of the HSSD (2012 ed). 00.10200.08S222N/A1.231014N/A.231024N/A.2The values used to calculate Total Propagated Uncertainty for survey H12527 varied based on the method used to reduce soundings to chart datum. For data reduced via a separation mode, Total Propagated Uncertainties were derived using a combination of: real time uncertainties for vessel motion; a priori values for equipment and vessel characteristics; an a priori value for the separation model; and field assigned values for sound speed uncertainties. The real time uncertainties for vessel motion include roll, pitch, gyro, navigation, and elevation. The uncertainties in these measurements were recorded as part of the POSPac IAPPK 3D positional solution and were applied to the soundings via an SBET RMS file generated by Applanix POSPac. Uncertainties for sonar mounting and vessel speed were assigned using the a priori values found in Appendix 4, table 4.9 of the NOAA Field Procedures Manual (FPM) (ed 2014), and applied to the data via the CARIS HIPS Hydrographic Vessel File. The uncertainty associated with the VDatum separation model was supplied by the Hydrographic Services Division’s Operations Branch (see Table 6, row 1). Finally, the uncertainty associated with sound speed measurements were based on the frequency and location of CDT casts, in accordance with the guidance set by Appendix 4 of the FPM (ed 2014) (see Table 7). For data reduced via water level modeling, Total Propagated Uncertainties again used a POSPac IAPPK solution for horizontal positioning, but used a zoned tide grid for vertical positioning. Uncertainty values for real time roll, pitch, gyro, and navigation remain the same, as do uncertainties from sonar mounting, vessel speed, and sound speed measurements. However, uncertainties for tide gauge measurement, tidal datum computation error, and tidal zoning error were provided by the Center for Operational Oceanographic Products and Services (CO-OPS) (see Table 6, row 2) The CO-OPS uncertainty value was provided at the 95% confidence interval. It was divided by 1.96 to provide the 1-sigma value needed by CARIS. Total Propagated Uncertainty was then evaluated to ensure compliance with section 5.1.3 of NOAA's Hydrographic Survey Specification and Deliverables (HSSD). First the maximum allowable uncertainty for each node was calculated. Second the ratio between actual uncertainty and maximum allowed uncertainty is found for each node. The resulting 'IHO_ratio' layer was filtered using a color map to show any areas where actual uncertainty exceeded the maximum allowed uncertainty. For the 4m grid, 4,461,120 nodes were evaluated and 99.97% were within IHO uncertainty. There were a total of two contemporary surveys, from the same project, that junction with Survey H12527. For both junction comparisons, overlapping areas of of the surveys were compared by the difference surface method in CARIS BathyDataBase.H12525100002013NOAA Ship THOMAS JEFFERSONWH12527 compared very well with H12525, with differences ranging from -1.107 meters to 1.894 meters. The mean difference is 0.014 meters and the standard deviation is 0.114 meters. Out of 7181 nodes, 2 have a difference greater than 1 meter, for a 99.972% pass rate.H12526400002013NOAA Ship THOMAS JEFFERSONSH12527 compared well with H12526, with differences ranging from -0.365 meters to 1.557 meters. The mean difference is 0.037 meters and the standard deviation is 0.325 meters. Out of 1709 nodes, 83 have a difference greater than 1 meter, for a 95.14% acceptance rate.Sonar system quality control checks were conducted as detailed in the quality control section of the DAPR.S-222 Reson 7125 FailureDuring the first day of acquisition, S-222's MBES failed. In order to keep the vessel operating, one cross line and one portion of a main scheme line used the Odom Echotrac MKIII. This system was not patch tested during the 2013 field season and is not included in the DAPR or HSRR documents. Soundings from the Odom Echotrac MKIII were compared to nearby MBES data and found to agree well. The MBES system was repaired and operational for the next survey day (DN150).Vertical Errors due to ERS AnomalyThere was an artifact due to errors in the vertical element of IAPPK positional solutions applied to multibeam data sporadically, throughout the survey. This type of vertical offset is not platform specific and no attempts to correlate these anomalies to SBET quality control information have proven successful. When present, the issue manifests itself during the application of GPS Tides. This reveals itself as MB data rising above or falling below the general trend of neighboring data. Where data was out of specification, ERS tides were removed and the data was reverted to zoned tides. Survey Launch Data Near ShoreThe quality of acquired MBES and SSS data was lower than usual due to large, standing swells near shore. A significantly higher portion of acquired MBES data was rejected in Subset editor as noise than is normal for a contemporary survey. S222 acquired sound velocity profiles every 30 to 60 minutes depending on the rate of change of the constantly monitored surface sound velocity. If surface sound velocity changed rapidly, casting frequency was increased. HSL 3101 and 3102 performed CTD casts approximately every 4 hours. For S-222, sound velocity was applied in CARIS HIPS using the "nearest in time," method. For the survey launches, "nearest in distance within time 2 hours," was used. During processing of H12527, CARIS HIPS software experienced a bug that caused a subset of the SSS contacts to lose their connection to the corresponding HIPS data. Density Requirements for Survey H12527H12527 is an object detection survey that utilized set line spacing for 200% SSS coverage with concurrent MBES data acquisition. Submitted grids adhere to the object detection coverage requirements of HSSD 2012, section 5.2.2.1. For most of the survey, adjacent MBES swaths do not overlap and therefore the number of nodes with five or fewer soundings is far higher in these ares. Density requirements for H12527 were analyzed using NOAA’s Standards Compliance Review script. It was found 98.5% of finalized surface nodes at the 1 meter grid resolution contain five or more soundings. The following lines exhibited vertical offsets from surrounding lines when ERS tides were used. In all cases, reverting to zoned tides fixed the vertical offset issue. 3101_DN163 lines: 163_114_1308, 163_146_1325, 163_114A1308, 163_210_1039, 163_211_1117, 163_212_1208, 163_226_1334, 163_213_1239, 163_600_1458, 163_601_1455, 163_602_1507, 163_603_1529, 163_604_1504, 163_605_1527, 092_2300, 093_2307, 094_2308, 095_2310, 096_2311, 097_2312, 099_2324, 098_2322, 099_2325, 099_2326.All sounding systems were calibrated as detailed in the DAPR.Backscatter was logged as an 7k file and submitted to the Atlantic Hydrographic Branch for processing. One line per vessel, per day was processed aboard the Thomas Jefferson in order to assess and ensure quality. CarisHIPS/SIPS8022013-05-31ProcessingCarisHIPS/SIPS8032013-07-15ProcessingNOAAProfilefield.xml V5.3.2During the early part of the 2013 field season, several hot fixes for CARIS 8.0 were applied. See the DAPR for a complete listing of these software changes.H12527_MB_50cm_MLLW_Final.csarCUBE0.51.2323.39NOAA_0.5mODMBH12527_MB_4m_MLLW_Final.csarCUBE4.01.3433.99NOAA_4mCoverageH12527_SSS_100%.csarSSS Mosaic1.0022NOAA_1m100% SSS CoverageH12527_SSS_200%.csarSSS Mosaic1.0022NOAA_1m200% SSS CoverageSubmitted CUBE surfaces follow the depth thresholding requirements outlined in the 2012 HSSD, section 5.2.2.1 for an object detection survey. The survey area of H12527 is predominantly covered by the 0.5 meter BASE surface.SBET Not Applied to All LinesDue to POS M/V logging issues causing data gaps in the acquisition of attitude information, the following lines do not have SBETs applied. S222_DN149: 149_901_1024, 149_901_1009, 149_902_1030. 3102_DN162: 162_042A2033, 162_043_2139, 162_044_2126, 162_045_2116, 162_045_2121, 162_046_2107, 162_047_2147. These 10 lines are crosslines and were compared to mainscheme. These lines compared favorably with SBET corrected mainscheme lines and no additional processing is required. Side scan Contact File CorruptionPrior to a an update of a CARIS version, SSS contacts were flagged and exported to S-57 format with images. The date of the export and the time of the version of the CARIS/SIPS contact export was known. The new version corrupted the "Contact" files located in the line directory. All old contacts were lost leaving an empty Contact file. As new contacts were selected the Contact files were either re-populated or new files created. The new features were then exported and appended to the previous S-57 file which was determined to be a qualitative reflection of the previous scanned data. The verifier may find that some features have no match in the sidescan contact file. It was determined that re-scanning the entire survey was not time efficient considering the confidence of the already preserved contacts. Simply stated there are before and after contact selections combined into one S-57 SSS file.Per section 5.1.2.3 of the FPM, no Horizontal and Vertical Control Report has been generated for Survey H12525.Mean Lower Low WaterDiscrete ZoningSandy Hook, NJ85316808531680.tidFinal ApprovedB310TJ2013CORP.zdfFinal2013-06-142013-06-28CO-OPS accepted preliminary zoning as final zoning for survey H12527. Since the survey was extended in to Jones Inlet, the accepted tide zoning does not include these lines. VDatum2013_B310_VDatum_Ellip_MLLW.xyzCross lines with and without SBETs applied were compared using Pydro's Time Series Comparison tool. Results of the comparison were: S222: N,mean,stdev = 158835,-0.086,0.117; HSL 3101: N,mean,stdev = 66032,-0.207,0.305; HSL 3102: N,mean,stdev = 112070,-0.024,0.045. See Appendix V for the interim deliverable memo and resulting VDATUM approval memo. The following lines were reverted back to discrete zoning from GPS tides to fix vertical offset issues: Vessel Day Line 3101 163 092_2300 3101 163 093_2307 3101 163 094_2308 3101 163 095_2310 3101 163 096_2311 3101 163 097_2312 3101 163 099_2324 3101 163 098_2322 3101 163 099_2325 3101 163 099_2326 3101 163 163_114_1308 3101 163 163_146_1325 3101 163 163_114A1308 3101 163 163_210_1039 3101 163 163_211_1117 3101 163 163_212_1208 3101 163 163_226_1334 3101 163 163_600_1458 3101 163 163_213_1239 3101 163 163_601_1455 3101 163 163_602_1507 3101 163 163_603_1529 3101 163 163_604_1504 3101 163 163_605_1527 3102 157 157_165_1455 3102 157 157_166_1539 3102 157 157_170_1841 3102 161 161_142_2033 3102 162 162_042A2033 3102 162 162_043_2139 3102 162 162_044_2126 3102 162 162_045_2116 3102 162 162_045_2121 3102 162 162_046_2107 3102 162 162_047_2147 S222 149 149_901_1024 S222 149 149_901_1009 S222 149 149_902_1030 S222 149 149_908_1430 North American Datum of 1983 (NAD83)UTM-18NSmart BaseMOR5MOR5MOR6MOR6NYCINYCINJNTNJNTNYBRNYBRNYCINYCINYNQNYNQSHK5SHK5ZNY1ZNY1Sandy Hook, NJ (286kHz)H12527 was compared to affected RNC and ENC products by creating a high density sounding layer in CARIS BathyDataBase and comparing charted water depths with surveyed soundings.1232669080000522013-062013-05-212013-06-01The chart agreed very well with H12527. Surveyed soundings generally agreed with charted depths to within plus or minus 2 feet with one area of exception (See the RNC 12352 comparison below for further discussion). 1235269420000342013-092012-08-212012-09-01In the offshore areas of raster 12352, soundings from H12527 generally agreed within 1-2 feet of charted depths. However, significant sand migration has occurred since the area was previously surveyed, and many of the charted water depths are inaccurate. This is especially true near the the approaches to Jones Inlet and within the mouth of the inlet itself. As noted on raster 12352_5, buoys and soundings in Jones Inlet are not charted due to continual change. The hydrographer recommends that the extents of this area be extended to the southwest, or that an additional note be included warning mariners of significantly varying water depths. A cautionary area is included in the submitted final feature file. 5Vicinity of Jones Inlet, showing extreme deviation of surveyed soundings and charted depths.file:///Z:/H12527/Data/Descriptive_Report/Images/Comp_JonesInlet_12352.bmp6South of Jones Beach. Areas of discrepancy are circled. file:///Z:/H12527/Data/Descriptive_Report/Images/Comp1_SouthJonesBeach_12352.bmp7South of Jones Beach. Areas of discrepancy are circled. file:///Z:/H12527/Data/Descriptive_Report/Images/Comp2_SouthJonesBeach_12352.bmp8South of Jones Beach. Areas of discrepancy are circled. file:///Z:/H12527/Data/Descriptive_Report/Images/Comp3_Jonesbeach_12352.bmpUS5NY53M20000102013-05-01falseMuch like RNC 12352, ENC US5NY53M agreed well (1 to 3 feet) with surveyed depths aside from the area of large discrepancy noted in the NW corner of the sheet. See RNC 12352 comparison for further discussion.US4NY1BM8000022013-01-24falseENC US4NY1BM agreed very well with H12527. Surveyed soundings generally agreed with charted depths to within 3 feet with one area of exception (See the RNC 12352 comparison above for further discussion). The survey contained 10 assigned AWOIS items: AWOIS item #7772: Hydrographer recommends deleting charted feature, disproved by 200% SSS investigation. AWOIS item #7813: Hydrographer recommends updating the charted position and depth of OBSTRN based on MBES data. AWOIS item #7727: Hydrographer recommends updating the charted position and depth of OBSTRN based on MBES data. AWOIS item #15087: Hydrographer recommends deleting charted feature, disproved by 200% SSS investigation. AWOIS item #7714: Hydrographer recommends updating the charted position and depth of WRECK based on MBES data. AWOIS item #15079: Hydrographer recommends deleting charted feature, disproved by 200% SSS investigation. AWOIS item #4302: Hydrographer recommends deleting charted buoy and associated anchor, disproved by 200% SSS investigation and visual examination. AWOIS item #15089: This item could not be fully investigated due to safety concerns. AWOIS item #15085: This item could not be fully investigated due to safety concerns. AWOIS item #4303: This item could not be fully investigated due to safety concerns. See the Final Feature HOB file for more details. No Maritime Boundary Points were assigned for this survey.No charted features exist for this survey that are not already assigned as AWOIS items.No uncharted features exist for this survey.No Danger to Navigation Reports were submitted for this survey.A fish haven obstruction area exists in the southern portion of H12527. The authorized minimum depth of the fish haven is 40ft and no soundings less than 49 feet were founding within this area. As expected, significant side scan contacts with heights up to 2.5 meters were observed in the fish haven, but these heights were still below the authorized 40 foot minimum depth and were not investigated with multibeam. It should be noted that the hydrographer observed active dumping of fish haven materials in the site by a tug and barge vessel. No maintained channels exist for this survey. There are no designated anchorages, precautionary areas, safety fairways, traffic separation schemes, pilot boarding areas, or channel and range lines within the survey limits.In total, 16 bottom samples were collected and these results were compared to charted bottom types. See the final feature HOB file for more details.A limited shoreline investigation was carried out and no features inshore of the NALL were not found. One assigned feature, AWOIS item #4303, was not found by H12527, but could not be fully investigated due to its proximity to land. No prior survey comparisons exist for this survey.Two ATONS exist for H12527 and both appear to be on station and functioning correctly. No changes are necessary to the charted ATONS.9ATONs on raster 12326 in the northwest corner of H12527. file:///Z:/H12527/Data/Descriptive_Report/Images/H12527_ATONS.bmpNo overhead features exist for this survey.Multiple submarine cables cross through H12527, but in all cases, no evidence of these cables is seen in MBES or SSS data. There are also two fish trap areas near shore, but H12527 did not discover evidence of a high concentration of fish traps in either of these areas. No ferry routes or terminals exist for this survey.No platforms exist for this survey.Significant features exist for this survey in the form of large sand migration in the vicinity of Jones Inlet (NW corner of H12527). As discussed in the chart comparison section, the hydrographer recommends retaining and/or expanding the cautionary zone that exists for the area. 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 and Specifications Deliverables Manual, 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.LTjg Andrew R. ClosSheet Manager2014-03-07LT Megan R. GuberskiField Operations Officer2014-03-07CDR James M. CrockerCommanding Officer2014-03-07